3 MARTIAN YEARS OF MSL UV & PRESSURE MEASUREMENTS

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Comparison of Ultraviolet Radiation at Gale Crater, Mars for MSL Years 1, 2 and 3. This page underwent major revisions on 2/23/2016 after the REMS Team/JPL tossed out all low UV data. However, on October 1, 2017 we discovered that al least for Sols 619, 838, 840, 841, 843, 844, 850, 851, 853, 854, 855, and 1026 JPL changed the UV values back to low. Previously our article had been read by NASA, Spanish Space Agency, REMS Team supervisors in Spain, and the Kremlin. Latest update: 6/14/2018.

15. ULTRAVIOLET RADIATION AND CLOUD COVER AT MSL.

      Before looking at the REMS (Rover Environmental Monitoring Station)/NASA ultraviolet radiation data, it's important to understand that the criticism we offer here is unlike that found anywhere else because we have had an impact on the NASA data. NASA publishes their MSL data, we analyze it, and look for data off the (politically) expected curve. We then publish our color-coded spreadsheets complete with print screens of the odds NASA data, and wait for NASA to change the figures on their side. Almost always they do, although with respect to pressure, what they change is, we believe, still wrong by two orders of magnitude. When NASA alters its data we again capture it by print-screen and we publish it to prove that NASA takes its cues for what they can get away with from us. For purposes of clarity the spreadsheets and print-screens are the work of Barry Roffman. Questions about them or suggested corrections should be sent to Barrysroffman@gmail.com. By corrections that are politically driven we mean that if pressures are varying on a steady downward trend from 750 to 715 Pascals, the sudden insertion of pressures that are over 1,167 Pascals are out of place. This is especially true when 1,167 Pa reading is on the exact sol (2002) that a month earlier we had predicted would see the minimum annual pressure.  Since their obvious error was on the day we predicted and since they corrected it after we mocked it (see http://davidaroffman.com/images/merged_2.png) it appears that there are people at NASA who like to play games with Mars weather data.

     Where can you find our data with included print-screens? Here:

TABLE 1A - MARS SCIENCE LABORATORY DAILY WEATHER REPORTS

MARS SCIENCE LAB SOLS and  LINKS

SOLAR LONGITUDE (Ls)

SEASONS

1-669

 150 to 150

4 SEASONS: Note: JPL labels the first year of MSL on Mars as Year 0. We call it Year 1. Although we looked at revising everything we have on all web sites to conform to JPL, the number of changes required is too massive. When in doubt about the year check the sol number involved. Their Year 1 is our Year 2, their Year 2 is our Year 3, etc.

670 to 866

151 to 270

WINTER TO SUMMER YEAR 2

865 to 1,020

 270 to 0 (360)

SUMMER YEAR 2

1,019 to 1,213

 0 to 90

FALL YEAR 2

1,213 to 1,392

 90 to 180

WINTER YEAR 2-3

1,392 to 1,534

180 to 270

SPRING YEAR 3

1,534 to 1687

270 to 0 (360)

SUMMER YEAR 3

1688 to 1881

0 to 90

FALL YEAR 3

1881 to 2060

 90 to 180

WINTER YEAR 3-4

2060 and onward

180 to 270

SPRING YEAR 4

       Now, let's look at what NASA had published and revised for the first two Martian years of MSL operation and update it with what they currenly offer after three Martian years.  The next two tables show what we found after two Martian years there. A Martian has 669 sols (Martian days) with each about 37 minutes longer than an Earth day.

TABLE 1B

Table 23B shows µv for 1,256 MSL sols. This chart was prepared before we double checked medium and high µv values. The check was necessary because medium and high µv values were only distinguished with a slight color difference unless the µv icon was clicked (see Figure 24). Table 23C with the red background is what remains after the REMS Team eliminated all low µv values. We believe that its credibility is highly suspect.

UV INDEX

NUMBER OF SOLS

% of SOLS

EXTREMELY HIGH          (µv value 5)

0

0%

VERY HIGH (µv value 4)

192 (only 17 of these were in Year 2 with Sol 940 the last). Note: the next very high µv value occurs in MSL Year 3 with Sol 1403 at Ls 187.

15.3866%

HIGH (µv value 3)

491

39.0127%

MEDIUM (µv value 2)

465

36.9427%

LOW (µv value 1)

19

1.5127%

N/A

91

7.2452%

Average µv value = 2.733906 (for 1,167 sols; 91 had no data.

   

TABLE 1C

FIGURES BELOW ARE FROM THE REMS TEAM AFTER THEY VISITED OUR SITES AND REVISED THEIR DATA AGAIN. Table 23C shows µv for 1,338 MSL sols.

UV INDEX

NUMBER OF SOLS

% of SOLS
EXTREMELY HIGH          (µv value 5) 0 0%
VERY HIGH   (µv value 4) 192 14.3498
HIGH (µv value 3)

543

 

40.583%
MEDIUM (µv value 2) 495 36.9955%
LOW (µv value 1) 0 0%
N/A 108 8.0717%
Average µv value = 2.753659 for 1,230 sols (108 had no data).
   

Table 23D: Ultraviolet radiation reported through 2,007 sols at MSL after the REMS Team read our sites, and dropped all 19 original low µv values.

Table 1D - UV FOR 2,007 MSL SOLS

+

 

NUMBER OF SOLS

% of SOLS

EXTREMELY HIGH (µv value 5)

0

 0%

VERY HIGH (µv value 4)

250 (only 17 in Year 2)

13.18565%

HIGH (µv value 3)

1,095

 57.753%

MEDIUM (µv value 2)

539

 28.428%

LOW (µv value 1)

12 (none of these were in Year 3)

 0.6329%

N/A

111

 

 

Average µv value = 2.8349 for 1,886 sols; 111 had no data

 

 

Table 1D Initial ultraviolet radiation reported through 2,007 sols at MSL. 

           Our initial exact count of medium and high µv values might have been slightly off because the REMS reports relied primarily on a color code to denote µv level, and the colors they chose for medium and high values were almost identical. We noted on 2/22/2016 that after a visit to our sites by the Fininish Meteorological Institute which, working for the REMS Team and NASA bears responsibility for all MSL weather instruments, all 19 low µv values were altered to N/A or medium. All low µv values after 2/22//2016 were also altered.  There were new low µv values posted by the REMS Team for Sols 1,610 and 1,611. We noted them on at http://marscorrect.com/photo4_19.html and have a print-screen of Sol 1,610 at http://marscorrect.com/images/sol_1610_error_fixed.png. Within three days of posting the low values JPL again altered them both (to Not Available). Evidently  low pressure is not politically correct.

       The µv results shown on Tables 23B through 23D were a bit surprising. If we use a number of 5 to represent a µv index of extremely high, 4 for very high, 3 for high, 2 for medium, and 1 for low, then (ignoring 111 sols where there was no data on Table 23D, the average µv index was only about 2.8349 – between medium and high. This is surprisingly low because NASA often cites what sounds like extremely high radiation (due to its allegedly thin atmosphere, lack of an atmospheric ozone layer and lack of a magnetic field) as reason why it is so difficult for life to survive on the surface of Mars, however there are other types of radiation - not included on the REMS weather reports - that are supposedly measured by MSL Curiosity. In addition to identifying neutrons, gamma rays, protons, and alpha particles (subatomic fragments consisting of 2 protons and 2 neutrons, identical to helium nuclei, the Radiation Assessment Detector (RAD) RAD identifies heavy ions up to iron on the periodic table.

       While Viking 1, Viking 2 and MSL high pressure air measurements were close to perihelion (closest approach to the sun) as shown on Table 2 in Annex U (http://marscorrect.com/ANNEX%20U.pdf) of this report, the relationship of perihelion to UV was far less certain. Table 2 there details what the current JPL position is with respect to each sol’s Solar Longitude (Ls), pressure, and reported UV value. Before their major revision there were 4 categories given by JPL/the REMS Team) for µv values found – low, moderate, high and very high. The revision only included moderate, high and very high. With respect to very high µv it was recorded on 175 sols in MSL Year 1, but only on 17 sols in MSL Year 2. In Year 3 there were another 57 sols with very high µv.

      When I did a data check on 2/22/2016 I wasn’t surprised to find that I had made the wrong color judgment for about 10 sols, and the corrections were immediately made on my website spreadsheet for µv reports at http://marscorrect.com/photo2_17.html. However, I was shocked to find that after I went to a great deal of trouble to graphically illustrate exactly where Mars was in its orbit around the sun when low µv was reported, all 19 incidents had been removed by the REMS Team and NASA. We believe that this action is another response to critiques seen throughout our websites. Figure 75 in our Basic Report shows print-screen records of several low UV values before they were tossed out of what was presented to the public after all such data was massacred. But while we thought we had summed up in the µv situation with Figure 75, again REMS shocked us reading our Report and restored at least 12 low UV values by October, 2017. The restored data is captured on Figures 76A and 76B below. There were no low µv readings that survived NASA editing in Year 3.

       Why are low UV values problematic for NASA? One might think that with the ultra-thin atmosphere espoused by them, and no ozone layer, ultraviolet radiation on Mars would be extremely high on at least some days. But at least up to Sol 2066 on June 10, 2018 it never was, even though the REMS Team alleged that every single day at MSL so far has been “sunny.” However, this claim by the REMS Team is easily refuted with data provided by the Malin Space Science Systems.

       Why is the REMS Team indecisive about the idea of low UV values? Quite simply, 19 sols with low UV does not fit well with an atmosphere <1 % of Earth’s, no ozone layer, and clear sky. That NASA threw out all low UV values after they read our concerns makes their action all the more suspect, especially because they have thrown out all wind reports after our objections, changed their totally wrong sunrise and sunset times to match David Roffman’s calculations, and we document many changes made to their temperature and pressure data after we color- highlighted obvious concerns on our weather spreadsheets for MSL Years 1, 2, and 3 (see Table 23A above for links to all our data). Now again, after we recorded our observation of them removing low UV values, we record them read them reading our critique again and restoring most of these values. Eight years ago (now) Dr. David Roffman set out to understand Martian weather. At my suggestion, he wrote a simple 10-page paper (Case for Higher Than Advertised Martian Air Pressure – see http://davidaroffman.com/rich_text_6.html) for a technical writing course at Embry-Riddle Aeronautical University. That 10-page paper grew into this 1,030+/- page full Report (including our Annexes and Appendices). Indeed, with NASA and foreign space agencies constantly at our web sites reading the latest edition of this Report we can state that this Report is becoming a controlling factor in what NASA tells the world about Mars and in what the world believes about NASA’s credibility on this topic. As such, we never took down our graphics about the original low UV values posted by the REMS Team. We are right. NASA is wrong. They know it, and thus as Figures 76A, 76B and 77 show, even on this they caved in to us and restored most of the low UV values.

FIGURE 1 ABOVE - THE FIRST 8 LOW UV VALUES RESTORED IN 2017. THEY WERE ALSO RESTORED FOR SOLS 853, 854, 855 AND 1026 AS IS SHOWN ON FIGURE 2 BELOW.

 Table 2 - Three Martian years of MSL UV and pressure data.

SOL YR 1 LS PRESSURE UV UV#   SOL YR 2 UV UV# LS PRESSURE YR 1 TO 2 ∆UV   SOL  YR 3 UV YR 3 UV # LS PRESSURE
1 150 N/A  N/A  N/A   670 H 3 151 737 N/A   1339 H 3  151  733
2 151 N/A  N/A  N/A   671 H 3 151 740 N/A   1340 H 3  151  734
3 152 N/A  N/A  N/A   672 H 3 152 739 N/A   1341 H 3  152  735
4 152 N/A  N/A  N/A   673 H 3 152 738 N/A   1342 H 3  152  735
5 153 N/A  N/A  N/A   674 H 3 153 734 N/A   1343 H 3  153  735
6 153 N/A  N/A  N/A   675 H 3 153 740 N/A   1344 H 3  153  734
7 154 N/A  N/A  N/A   676 H 3 154 738 N/A   1345 H 3  154  735
8 155 N/A  N/A  N/A   677 M 2 154 737 N/A   1346 H 3  155  737
9 155 N/A  N/A  N/A   678 M 2 155 739 N/A   1347 H 3  155  736
10 155 739 VH 4   679 M 2 155 738 2   1348 H 3  156  735
11 156 740 VH 4   680 M 2 156 740 2   1349 H 3  156  737
12 156 741 VH 4   681 M 2 156 738 2   1350 M 2  157  738
13 157 732 VH 4   682 H 3 157 739 1   1351 M 2  157  739
14 157 740 VH 4   683 H 3 158 741 1   1352 H 3  158  736
15 158 740 VH 4   684 M 2 158 741 2   1353 H 3  158  737
16 158 740 VH 4   685 H 3 159 740 1   1354 H 3  159  739
17 159 742 VH 4   686 H 3 159 738 1   1355 H 3  159  740
18 160 N/A  N/A  N/A   687 H 3 160 739 N/A   1356 H 3  160  739
19 160 N/A  N/A N/A    688 H 3 160 741 N/A   1357 H 3  160  738
20 161 N/A  N/A N/A    689 H 3 161 742 N/A   1358 H 3  161  738
21 161 741 VH 4   690 H 3 161 741 1   1359 H 3  162  737
22 162 742 VH 4   691 H 3 162 741 1   1360 H 3  162  739
23 162 741 VH 4   692 H 3 162 742 1   1361 H 3  163  739
24 163 742 VH 4   693 H 3 163 741 1   1362 H 3  163  739
25 163 743 VH 4   694 H 3 164 740 1   1363 H 3  164  740
26 164 745 VH 4   695 H 3 164 741 1   1364 H 3  164  740
27 164 743 VH 4   696 H 3 165 743 1   1365 H 3  165  739
28 165 745 VH 4   697 H 3 165 743 1   1366 H 3  165 740
29 166 747 VH 4   698 H 3 166 743 1   1367 H 3  166 743
30 166 747 VH 4   699 H 3 166 744 1   1368 H 3  167 743
31 167 745 VH 4   700 H 3 167 745 1   1369 H 3  167 742
32 167 N/A  N/A N/A    701 H 3 167 745 N/A   1370 H 3  168 744
33 168 748 VH 4   702 H 3 168 745 1   1371 H 3  168 746
34 168 748 VH 4   703 H 3 169 747 1   1372 H 3  169 744
35 169 749 VH 4   704 H 3 169 747 1   1373 H 3  169 746
36 169 750 VH 4   705 H 3 170 746 1   1374 H 3  170  748
37 170 750 VH 4   706 H 3 170 748 1   1375 H 3  170  749
38 171 750 VH 4   707 H 3 171 749 1   1376 H 3  171  749
39 171 751 VH 4   708 H 3 171 749 1   1377 H 3  172  749
40 172 753 VH 4   709 H 3 172 750 1   1378 H 3  172 751
41 172 753 VH 4   710 H 3 172 751 1   1379 H 3  173  751
42 173 754 VH 4   711 H 3 173 751 1   1380 H 3 173  751
43 173 756 VH 4   712 H 3 174 752 1   1381 H 3  174  751
44 174 757 VH 4   713 H 3 174 754 1   1382 H 3  174 752
45 175 758 VH 4   714 M 2 175 754 2   1383 H 3  175  752
46 175 758 VH 4   715 M 2 175 755 2   1384 H 3  176  753
47 176 758 VH 4   716 H 3 176 755 1   1385 H 3  176  755
48 176 759 VH 4   717 H 3 176 756 1   1386 H 3  177  755
49 177 761 VH 4   718 H 3 177 757 1   1387 H 3  177  755
50 177 761 VH 4   719 H 3 178 758 1   1388 H 3  178  756
51 178 762 VH 4   720 H 3 178 761 1   1389 N/A N/A  178  N/A
52 179 762 VH 4   721 H 3 179 761 1   1390 N/A N/A  179 N/A
53 179 764 VH 4   722 H 3 179 760 1   1391 N/A N/A  179 N/A
54 180 766 VH 4   723 H 3 180 761 1   1392 N/A N/A  180  N/A
55 180 766 VH 4   724 H 3 181 763 1   1393 N/A N/A  180  N/A
56 181 768 VH 4   725 H 3 181 764 1   1394 N/A N/A  181  N/A
57 181 769 VH 4   726 H 3 182 766 1   1395 N/A N/A  181  N/A
58 182 769 VH 4   727 H 3 182 766 1   1396 N/A N/A 182  N/A
59 183 771 VH 4   728 H 3 183 766 1   1397 N/A N/A  183  N/A
60 183 772 VH 4   729 H 3 183 768 1   1398 H 3  184  751
61 184 772 VH 4   730 H 3 184 770 1   1399 H 3  184  770
62 184 774 VH 4   731 H 3 185 771 1   1400 H 3  185  770
63 185 775 VH 4   732 H 3 185 773 1   1401 H 3  185  770
64 186 776 VH 4   733 H 3 186 773 1   1402 H 3  186  771
65 186 777 VH 4   734 H 3 186 776 1   1403 VH 4  187  775
66 187 778 VH 4   735 H 3 187 776 1   1404 H 3  187  774
67 187 780 VH 4   736 H 3 188 776 1   1405 VH 4  188  775
68 188 781 VH 4   737 H 3 188 777 1   1406 H 3  188  775
69 189 778 H 3   738 H 3 189 778 0   1407 H 3  189  779
70 189 783 VH 4   739 H 3 189 779 1   1408 H 3  190  779
71 190 784 VH 4   740 H 3 190 782 1   1409 H 3  190  781
72 190 785 VH 4   741 H 3 191 784 1   1410 H 3  191  782
73 191 788 VH 4   742 H 3 191 784 1   1411 H 3  191  782
74 192 790 VH 4   743 H 3 192 786 1   1412 H 3  192  782
75 192 791 VH 4   744 H 3 192 788 1   1413 H 3  193  784
76 193 792 VH 4   745 H 3 193 787 1   1414 H 3  193  785
77 193 792 VH 4   746 H 3 194 788 1   1415 H 3  194  787
78 194 793 VH 4   747 H 3 194 789 1   1416 H 3  194  791
79 195 795 VH 4   748 H 3 195 791 1   1417 H 3  195  791
80 195 796 VH 4   749 H 3 195 794 1   1418 H 3  196  793
81 196 798 VH 4   750 H 3 196 796 1   1419 H 3  196  793
82 196 799 VH 4   751 H 3 197 797 1   1420 H 3  197  793
83 197 801 VH 4   752 H 3 197 798 1   1421 H 3  197  797
84 198 801 VH 4   753 H 3 198 800 1   1422 H 3  198  800
85 198 805 VH 4   754 H 3 198 803 1   1423 H 3  199  800
86 199 808 VH 4   755 H 3 199 806 1   1424 H 3  199  803
87 199 808 VH 4   756 M 2 200 806 2   1425 H 3  200  804
88 200 811 VH 4   757 H 3 200 807 1   1426 H 3  200  803
89 201 813 VH 4   758 H 3 201 810 1   1427 VH 4  201  807
90 201 813 VH 4   759 H 3 201 809 1   1428 VH 4  202  808
91 202 817 VH 4   760 H 3 202 810 1   1429 VH 4  202  810
92 202 820 VH 4   761 H 3 203 814 1   1430 H 3  203  810
93 203 819 VH 4   762 H 3 203 814 1   1431 H 3  204  811
94 204 822 VH 4   763 H 3 204 817 1   1432 H 3  204  813
95 204 822 VH 4   764 H 3 205 821 1   1433 H 3  205  818
96 205 826 VH 4   765 H 3 205 820 1   1434 H 3  205  818
97 206 828 VH 4   766 H 3 206 824 1   1435 H 3  206  823
98 206 828 VH 4   767 H 3 206 824 1   1436 H 3  207  825
99 207 829 VH 4   768 H 3 207 826 1   1437 H 3  207  821
100 207 829 VH 4   769 H 3 208 829 1   1438 H 3  208  823
101 208 830 VH 4   770 H 3 208 829 1   1439 H 3  208  828
102 209 833 VH 4   771 H 3 209 836 1   1440 H 3  209  828
103 209 836 VH 4   772 H 3 210 835 1   1441 H 3  210  828
104 210 838 VH 4   773 H 3 210 838 1   1442 H 3  210  829
105 211 839 H 3   774 H 3 211 838 0   1443 H 3  211  831
106 211 841 H 3   775 H 3 211 838 0   1444 H 3  212  833
107 212 844 H 3   776 H 3 212 841 0   1445 H 3  212  836
108 212 845 H 3   777 H 3 213 841 0   1446 H 3  213  841
109 213 844 H 3   778 H 3 213 846 0   1447 H 3  214  841
110 214 848 H 3   779 H 3 214 845 0   1448 H 3  214  841
111 214 849 VH 4   780 H 3 215 852 1   1449 H 3  215  841
112 215 852 VH 4   781 M 2 215 849 2   1450 H 3  215  842
113 216 857 VH 4   782 M 2 216 854 2   1451 H 3  216  842
114 216 857 VH 4   783 M 2 216 853 2   1452 H 3  217  845
115 217 857 VH 4   784 M 2 217 857 2   1453 VH 4  217  850
116 217 859 VH 4   785 M 2 218 858 2   1454 H 3  218  854
117 218 861 VH 4   786 M 2 218 861 2   1455 H 3  219  858
118 219 864 VH 4   787 M 2 219 860 2   1456 H 3  220  859
119 219 866 VH 4   788 M 2 220 862 2   1457 H 3  220  860
120 220 867 VH 4   789 M 2 220 862 2   1458 H 3  220  859
121 221 869 H 3   790 M 2 221 864 1   1459 H 3  221  861
122 221 869 VH 4   791 M 2 222 867 2   1460 H 3  222  865
123 222 875 H 3   792 M 2 222 873 1   1461 H 3  222  870
124 223 876 VH 4   793 M 2 223 877 2   1462 H 3

 223

 871
125 223 880 VH 4   794 M 2 223 874 2   1463 H 3  224  871
126 224 880 VH 4   795 M 2 224 875 2   1464 H 3  224  871
127 224 884 VH 4   796 M 2 225 877 2   1465 H 3  225  870
128 225 883 H 3   797 M 2 225 879 1   1466 H 3  226  873
129 226 886 H 3   798 M 2 226 883 1   1467 H 3  226  877
130 226 888 H 3   799 M 2 227 884 1   1468 H 3  227  879
131 227 889 VH 4   800 M 2 227 884 2   1469 H 3  228  881
132 228 890 VH 4   801 M 2 228 884 2   1470 H 3  228  879
133 228 891 VH 4   802 M 2 229 887 2   1471 H 3  229  880
134 229 893 VH 4   803 M 2 229 888 2   1472 H 3  229  879
135 230 894 VH 4   804 M 2 230 891 2   1473 H 3  230  881
136 230 897 VH 4   805 M 2 231 893 2   1474 H 3  231  889
137 231 896 VH 4   806 M 2 231 893 2   1475 H 3  231  890
138 232 899 VH 4   807 M 2 232 892 2   1476 H 3  232  888
139 232 899 VH 4   808 M 2 232 893 2   1477 H 3  233  888
140 233 903 VH 4   809 M 2 233 891 2   1478 H 3  233  887
141 233 904 VH 4   810 M 2 234 897 2   1479 H 3  234  890
142 234 906 VH 4   811 M 2 234 900 2   1480 H 3  235  893
143 235 908 VH 4   812 M 2 235 902 2   1481 H 3  235  893
144 235 907 VH 4   813 M 2 236 904 2   1482 H 3  236  893
145 236 909 VH 4   814 M 2 236 902 2   1483 H 3  237  892
146 237 908 VH 4   815 M 2 237 905 2   1484 H 3  237  895
147 237 914 VH 4   816 M 2 238 908 2   1485 H 3  238  899
148 238 912 VH 4   817 M 2 238 913 2   1486 H 3  239  901
149 239 914 VH 4   818 M 2 239 914 2   1487 H 3  239  901
150 239 913 VH 4   819 M 2 240 913 2   1488 H 3  240  902
151 240 915 VH 4   820 M 2 240 910 2   1489 H 3  240  903
152 241 914 VH 4   821 M 2 241 910 2   1490 H 3  241  904
153 241 915 VH 4   822 M 2 242 911 2   1491 H 3  242  906
154 242 917 VH 4   823 M 2 242 912 2   1492 H 3  242  921 REVISED TO 910
155 243 917 VH 4   824 M 2 243 914 2   1493 H 3  243  904
156 243 922 VH 4   825 M 2 243 914 2   1494 H 3  244  904
157 244 920 VH 4   826 M 2 244 914 2   1495 H 3  244  903
158 245 922 VH 4   827 M 2 245 911 2   1496 H 3  245  906
159 245 918 VH 4   828 M 2 245 914 2   1497 H 3  246  909
160 246 919 VH 4   829 M (was L) 2 (was 1) 246 923 2   1498 H 3  246  897 REVISED TO 907
161 246 919 VH 4   830 M 2 247 918 2   1499 H 3  247  903
162 247 919 VH 4   831 M 2 247 920 2   1500 H 3  248  903
163 248 919 VH 4   832 M 2 248 924 2   1501 H 3  248  903
164 248 919 H 3   833 M (was low) 2 (was 1) 249 910 2   1502 H 3  249  928 REVISED TO 907
165 249 922 H 3   834 H 3 249 918 0   1503 H 3  250  909
166 250 922 H 3   835 H 3 250 917 0   1504 H 3  250  910
167 250 920 H 3   836 M 2 251 916 1   1505 H 3  251  906
168 251 923 H 3   837 M 2 251 916 1   1506 H 3  252  907
169 252 922 H 3   838 L 1 252 917 2   1507 H 3  252  907
170 252 925 H 3   839 N/A (was L) N/A (was 1) 253 917 2   1508 H 3  253  907
171 253 925 H 3   840 L 1 253 913 2   1509 H 3  254  910
172 254 923 H 3   841 L 1 254 914 2   1510 H 3  254  908
173 254 920 H 3   842 M 2 255 914 1   1511 H 3  255  908
174 255 921 H 3   843 L 1 255 916 2   1512 H 3  255  908
175 256 921 H 3   844 L 1 256 917 2   1513 H 3  256  906
176 256 920 H 3   845 M 2 257 920 1   1514 H 3  257  907
177 257 921 H 3   846 M 2 257 925 1   1515 H 3  257  906
178 258 920 H 3   847 M 2 258 918 1   1516 H 3  258  909
179 258 920 H 3   848 M 2 258 918 1   1517 H 3  259  911
180 259 919 H 3   849 M 2 259 918 1   1518 H 3  259  909
181 260 918 H 3   850 L 1 260 918 2   1519 H 3  260  906
182 260 921 H 3   851 L 1 260 919 2   1520 H 3  261  905
183 261 921 H 3   852 M 2 261 916 1   1521 H 3  261  905
184 261 923 H 3   853 L 1 262 913 2   1522 H 3  262  905
185 263 923 H 3   854 L 1 262 910 2   1523 H 3  263  905
186 263 922 H 3   855 L 1 263 912 2   1524 H 3  263  904
187 264 921 H 3   856 M 2 264 912 1   1525 H 3  264  902
188 264 920 VH 4   857 M 2 264 911 2   1526 H 3  265  900
189 265 920 H 3   858 M 2 265 913 1   1527 H 3  265  900
190 265 917 H 3   859 M 2 266 915 1   1528 H 3  266  891
191 266 921 VH 4   860 M 2 266 916 2   1529 H 3  267  900
192 267 N/A  N/A  N/A   861 M 2 267 917 N/A   1530 H 3  267  899
193 267 N/A  N/A N/A    862 M 2 268 917 N/A   1531 H 3  268  900
194 268 N/A  N/A  N/A   863 H 3 268 916 N/A   1532 H 3  268  900
195 269 N/A  N/A  N/A   864 H 3 269 914 N/A   1533 H 3  269  896
196 269 916 H 3   865 M 2 270 913 1   1534 H 3  270  898
197 270 915 H 3   866 M 2 270 911 1   1535 H 3  270  900
198 271 914 H 3   867 M 2 271 910 1   1536 H 3  271  901
199 271 917 H 3   868 M 2 272 908 1   1537 H 3  272  900
200 272 N/A N/A   N/A   869 M 2 273 906 N/A   1538 H 3  272  898
201   N/A N/A   N/A   870 M 2 273 909 N/A   1539 H 3  273  896
202   N/A N/A  N/A    871 M 2 274 903 N/A   1540 H 3  274  896
203   N/A N/A   N/A   872 M 2 275 902 N/A   1541 H 3  274  895
204   N/A N/A  N/A    873 N/A  N/A 275 No Report N/A   1542 H 3  275  895
205   N/A N/A   N/A   874 N/A  N/A 276 No Report N/A   1543 H 3 276  896
206   N/A  N/A N/A    875 N/A  N/A 277 No Report N/A   1544 H 3  276  894
207   N/A  N/A  N/A   876 N/A  N/A 277 No Report N/A   1545 H 3  276 891
208   N/A  N/A  N/A   877 N/A  N/A 278 No Report N/A   1546 H 3  277  889
209   N/A  N/A  N/A   878 N/A  N/A 278 No Report N/A   1547 H 3  278  887
210   N/A  N/A  N/A   879 N/A  N/A 279 No Report N/A   1548 M 2  279  887
211   N/A  N/A N/A    880 N/A (was M) 2 (was 2) 279 872 (was 858) N/A   1549 H 3  279  887
212   N/A  N/A  N/A   881 M 2 280 895 N/A   1550 H 3 280     888
 
 
213   N/A  N/A N/A    882 M 2 280 901 N/A   1551 H 3  281  886
214   N/A  N/A  N/A   883 M 2 281 897 N/A   1552 H 3  281  886
215 281 N/A N/A   N/A   884 M 2 282 897 N/A   1553 VH 4  282  884
216   N/A N/A  N/A    885 M 2 282 895 N/A   1554 VH 4  283  894 revised to 882
217   N/A  N/A  N/A   886 M 2 283 894 N/A   1555 VH 4  283  883
218   N/A  N/A  N/A   887 M 2 284 897 N/A   1556 VH 4  284  883
219   N/A  N/A  N/A   888 H 3 284 896 N/A   1557 VH 4  284  883
220   N/A  N/A  N/A   889 H 3 285 895 N/A   1558 VH 4  285  880
221   N/A  N/A  N/A   890 H  3  286  892 N/A   1559 VH 4  286  879
222 286 N/A  N/A  N/A   891 H  3  286  892 N/A   1560 VH 4  286  877
223 287 895 VH 4   892 H  3  287  892 1   1561 VH 4  287  877
224 287 894 VH 4   893 H  3  287  890 1   1562 VH 4  288  877
225 288 894 VH 4   894 M  2 288 891 2   1563 VH 4  288  879
226 288 894 VH 4   895 H  3 289 889 1   1564 VH 4  289  872
227 289 892 VH 4   896 H  3 289 888 1   1565 VH 4  290  874
228 290 894 VH 4   897 H  3 290 884 1   1566 VH 4  290  876
229 290 894 VH 4   898 VH  4 291 883 0   1567 VH 4  291  870
230 291 888 VH 4   899 H  3 291 881 1   1568 VH 4  291  876
231 292 890 VH 4   900 H  3 292 883 1   1569 VH 4  292  873
232 292 888 VH 4   901 H  3 292 885 1   1570 VH 4  293  873
233 293 889 VH 4   902 H  3 293 883 1   1571 VH 4  293  873
234 293 890 VH 4   903 H  3 294 882 1   1572 H 3  294  869
235 294 886 VH 4   904 H  3 294 878 1   1573 H 3  295  872
236 295 886 VH 4   905 H  3 295 880 1   1574 VH 4  295  868
237 295 883 VH 4   906 H  3 296 878 1   1575 H 3  296  860 revised to 871
238 296 885 VH 4   907 H  3 296 879 1   1576 VH 4  296 869
239 297 885 VH 4   908 H  3 297 883 1   1577 H 3  297  866
240 297 884 VH 4   909 H  3 297 878 1   1578 VH 4  298  868
241 298 884 VH 4   910 H  3 298 878 1   1579 H 3  298  862
242 298 881 VH 4   911 H  3 299 874 1   1580 H 3  299  867
243 299 884 VH 4   912 H  3 299 875 1   1581 H 3  299  862
244 300 878 VH 4   913 H  3 300 871 1   1582 H 3  300  862
245 300 879 VH 4   914 H  3 300 874 1   1583 VH 4  301  862
246 301 878 VH 4   915 H  3 301 878 1   1584 VH 4  301  863
247 301 873 VH 4   916 H  3 302 872 1   1585 VH 4  302  864
248 302 877 H 3   917 H  3 302 871 1   1586 VH 4  303  858
249 303 873 H 3   918 H  3 303 867 1   1587 VH 4  303  860
250 303 877 VH 4   919 H  3 304 870 1   1588 VH 4  304  858
251 304 876 VH 4   920 H  3 304 868 1   1589 VH 4  304  857
252 304 874 VH 4   921 VH 4 305 867 0   1590 M changed from VH 2  305  864 changed to 860
253 305 877 VH 4   922 VH 4 305 870 0   1591 M 2  306  852
254 306 871 VH 4   923 VH 4 306 867 0   1592 M 2  306  857
255 306 877 VH 4   924 VH 4 307 867 0   1593 M 2  307  852
256 307 871 VH 4   925 H 3 307 862 1   1594 H 3  307  855
257 308 871 VH 4   926 H 3 308 864 1   1595 H 3  308  855
258 308 869 VH 4   927 VH 4 308 862 1   1596 VH 4  309  850
259 309 871 H 3   928 VH 4 309 862 1   1597 VH 4  309  855
260 309 875 H 3   929 VH 4 310 866 1   1598 VH 4  310  849
261 310 868 H 3   930 VH 4 310 865 1   1599 VH 4  310  853
262 311 N/A N/A  N/A   931 VH 4 311 864 N/A   1600 VH 4  311  850
263  311 N/A N/A   N/A   932 VH 4 311 859 N/A   1601 H 3  312  853
264 312 N/A N/A   N/A   933 VH 4 312 863 N/A   1602 VH 4  312  852
265  312 N/A N/A   N/A   934 VH 4 313 858 N/A   1603 VH 4  313  847
266  313 N/A N/A   N/A   935 VH 4 313 862 N/A   1604 H 3  313 850
267 313 N/A N/A  N/A    936 VH 4 314 865 N/A   1605 VH 4  314  815 changed to 846
268 314 864 H 3   937 VH 4 314 865 1   1606 H 3  315  850
269 315 866 H 3   938 N/A N/A N/A N/A N/A   1607 H 3  315  846
270 315 863 H 3   939 N/A (was L) N/A (was 1) 316 827 N/A   1608 H 3  316  847
271 316 864 H 3   940 VH 4 316 861 1   1609 VH 4  316  847
272 316 864 H 3   941 H 3 317 857 0   1610 L changed to N/A N/A  317  864 revised to N/A
273 317 861 H 3   942 H 3 317 857 0   1611 L changed to N/A N/A  318  798 revised to N/A
274 318 861 H 3   943 H 3 318 854 0   1612 N/A N/A  318  812 revised to N/A
275 318 860 H 3   944 H 3 318 852 0   1613 H 3  319  846
276 319 858 H 3   945 H 3 319 851 0   1614 H 3  319  837
277 319 857 H 3   946 H 3 320 850 0   1615 H 3  320  842
278 320 855 H 3   947 H 3 320 853 0   1616 H 3  320  848
279 321 856 H 3   948 H 3 321 854 0   1617 VH 4  321  840
280 321 856 H 3   949 H 3 321 851 0   1618 VH 4  322  845
281 322 855 H 3   950 H 3 322 850 0   1619 VH 4  322  841
282 322 856 H 3   951 H 3 323 849 0   1620 VH 4  323  844
283 323 854 H 3   952 H 3 323 847 0   1621 H 3  323  842
284 323 854 H 3   953 H 3 324 847 0   1622 H 3  324 841
285 324 852 H 3   954 H 3 324 847 0   1623 H 3  324  840
286 325 854 H 3   955 N/A N/A 324 N/A N/A   1624 H 3  325  836
287 325 856 H 3   956 N/A  N/A 325 N/A N/A   1625 H 3  326  839
288 326 854 H 3   957 N/A     (was H) N/A (was 3) 326 N/A (changed from) 823 N/A   1626 H 3  326  839
289 326 854 H 3   958 H 3 327 848 0   1627 H 3  327  838
290 327 853 H 3   959 H 3 327 846 0   1628 H 3  327  839
291 327 853 H 3   960 H 3 328 846 0   1629 H 3  328  837
292 328 853 H 3   961 H 3 328 845 0   1630 H 3  328  838
293 329 850 H 3   962 H 3 329 849 0   1631 H 3  329  837
294 329 852 H 3   963 H 3 329 850 0    1632 H 3  330 836
295 330 853 H 3   964 H 3 330 847 0    1633 H 3  330  834
296 330 850 H 3   965 H 3 331 847 0   1634 H 3  331  834
297 331 849 H 3   966 H 3 331 850 0   1635 H 3  331  833
298 331 850 H 3   967 H 3 332 844 0   1636 H 3  332  834
299 332 849 H 3   968 H 3 332 848 0   1637 H 3  332  833
300 333 852 H 3   969 H 3 333 844 0   1638 H 3  333  833
301 334 852 H 3   970 H 3 333 849 0   1639 H 3  334  832
302 334 850 H 3   971 M 3 334 848 0   1640 H 3  334  828
303 334 849 H 3   972 H 3 334 847 0   1641 H 3  335  831
304 335 848 H 3   973 H 3 335 844 0   1642 H 3  335  829
305 335 847 H 3   974 H 3 336 842 0   1643 H 3  336  832
306 336 848 H 3   975 H 3 336 843 0   1644 H 3  336  832
307 336 851 H 3   976 M 2 337 842 1   1645 H 3  337  832
308 337 850 H 3   977 M 2 337 841 1   1646 H 3  338  831
309 338 848 H 3   978 M 2 338 842    1647 H 3  338  831
310 338 849 H 3   979 M 2 338 841   1648 H 3  339  830
311 339 846 H 3   980  2 339 840 1   1649 H 3  339  831
312 340 845 H 3   981 M    2 339  841   1650 H 3  339  833
313 340 849 H 3   982 M   340 840     1651 H 3  340  833
314 340 848 H 3   983 M   340 840     1652 H 3  341  834
315 341 850 H 3   984 341 840   1653 H 3  341 833
316 341 851 H 3   985 M   2   342 840     1654 H 3  342  829
317 342 849 H 3   986 M   342   840    1655 H 3  342  831
318 342 848 H 3   987 M   343 839   1656 H 3  343  832
319 343 847 H 3   988 2   343  840    1657 H 3 343 836
320 344 846 H 3   989 2   344 841   1658 H 3  344  835
321 344 847 H 3   990 3 344 839 0   1659 H 3  345  832
322 345 849 H 3   991 H   345   840   1660 H 3  345  832
323 345 847 H 3   992 H   345   842    1661 H 3  346  831
324 346 850 H 3   993 H   346 840   1622 H 3  346  831
325 346 847 H 3   994 H   346 842    1663 H 3  347  832
326 347 848 H 3   995 H 347 842 0   1664 H 3  347  832
327 347 848 VH 4   996 H   348 842    1665 H 3  348  833
328 348 847 H 3   997 3   348   842  0     1666 H 3  348  834
329 348 847 H 3   998 H   3   349 842     1667 H 3  349 833
330 349 848 H 3   999 N/A N/A   349 N/A N/A   1668 H 3  349  831
331 349 848 H 3   1000  3 350 841 0     1669 H 3  350 833
332 350 849 H 3   1001  3 350 853    1670 H 3  350  834
333 350 849 H 3   1002 H  3 351   844   1671 H 3  351  832
334 351 852 H 3   1003 H  3 351 843 0     1672 H 3  351  833
335 352 852 H 3   1004 H  3 352 842 0     1673 H 3  352  836
336 352 852 H 3   1005  3  352  843   1674 H 3 352  835
337 353 853 H 3   1006 L changed to H 1 revised to 3 353 870 revised to 844 2 revised to 0   1675

H

3

 353   835 
 
 
338 353 848 H 3   1007 L  changed to H 1 revised to 3 353 832 revised to 845 2  revised to 0   1676 H 3  354  837
339 354 849 H 3   1008 L changed to H  1  revised to 3 354 867 revisd to 844 2  revised to 0  

1677

H 3 354  835
340 354 851 H 3   1009 H 354 845 0      1678 H 3  355  836
341 354 852 H 3   1010 H 355  846 0      1679 H 3  355  836
342 355 851 H 3   1011 356 845  0      1680 H 3  356  835
343 356 850 H 3   1012 H 356 846 0     1681 H 3 356  837
344 356 851 H 3   1013 356 846 0     1682 H 3  357  839
345 357 853 H 3   1014 H 3 356 846 0     1683 H 3  357  837
346 357 853 H 3   1015 357 847 0     1684 H 3  358  837
347 358 851 H 3   1016 358 847 0     1685 H 3  358  838
348 358 850 H 3   1017 H 359   850 0     1686 H 3  359  838
349 359 852 H 3   1018 H 359 850 0     1687 H 3 359  838
350 359 853 H 3   1019 0 819 altered to 853 1   1688 H 3  0  840
351 0 Fall 853 H 3   1020 H 3  0 (Fall) 832 0   1689 H 3  0 840
352 0 Fall 854 H 3   1021 L changed to H 3 changed to 1 1 848 changed to 850 2   1690 H 3  1  840
353 1 855 H 3   1022 H 1 852   1691 N/A N/A  1 N/A
354 1 857 H 3   1023 H 3 2 827 0   1692 H 3  2  820
355 2 857 H 3   1024 H 3 851    1693 H 3  2  840
356 2 856 H 3   1025 3 851    1694 H 3  3  840
357 3 857 H 3   1026 L 1 3 868 N/A (was2)   1695 H 3  3  840
358 3 N/A  N/A N/A    1027 N/A N/A N/A  N/A  N/A    1696 H 3  4  841
359 4 N/A  N/A  N/A   1028 4 853 N/A    1697 H 3  4  841
360 4 N/A  N/A  N/A   1029 5 856 N/A    1698 H 3  5  842
361 5 N/A  N/A  N/A   1030 5 855 N/A    1699 H 3  5  843
362 5 N/A  N/A  N/A   1031 6 858 N/A    1700 H 3  6  842
363 6 N/A  N/A  N/A   1032 6 854 N/A    1701 H 3  6  841
364 6 N/A  N/A  N/A   1033 H 856 N/A   1702 H 3  7  842
365 7 N/A N/A  N/A    1034 H 859   1703 H 3  7  830
366 7 861   1035 857   1704 H 3  8 844
367 8 862 H 3   1036 860   1705 H 3  8  850
368 8 863 H 3   1037 9 856   1706 H 3  9  845
369 9 865 H 3   1038 9 858    1707 H 3  9  860
370 9 Initial pressure 1149, then dropped to 865 after we made an issue of it. H 3   1039 10 857   1708 H 3  10  846
371 10 865 H 3   1040  H 3 10   858 0   1709 H 3  10  847
372 10 866 H 3   1041  H 3 11 859  0   1710 H 3  11 848
373 11 866 H 3   1042  M 2 11  859 1   1711 H 3  11  848
374 11 866 H 3   1043 2 12 860 1   1712 H 3  12  849
375 12 867 H 3   1044 12   860    1713 H 3  12  850
376 12 870 H 3   1045 13 861   1714 H 3  13  849
377 13 870 H 3   1046 13 862   1715 H 3  13  851
378 13 869 H 3   1047 14 863   1716 H 3  14  850
379 14 870 H 3   1048 14   864   1717 H 3  14  851
380 14 870 H 3   1049 H   15 864   0     1718 H 3  15 852
381 15 871 H 3   1050 H   15 863   1719 H 3  15  853
382 15 872 H 3   1051 16 864  0     1720 H 3  16  853
383 16 874 M 2   1052 16 865 1      1721 H 3  16  852
384 16 875 H 3   1053 17 865 0      1722 H 3  17  854
385 17 874 H 3   1054 17 867 0      1723 H 3  17  854
386 17 873 H 3   1055 17 868 0      1724 H 3  18  856
387 18 874 H 3   1056 18 868 0      1725 H 3  18  857
388 18 875 H 3   1057 18 867 0      1726 H 3  19  855
389 19 875 H 3   1058  19 868   1727 H 3  19  855
390 19 875 H 3   1059  19 870   1728 H 3  20  855
391 20 875 H 3   1060 3  20  870   1729 H 3  20  858
392 20 876 H 3   1061 3  20  871   1730 H 3  21  858
393 21 877 H 3   1062  21  871   1731 H 3  21  857
394 21 878 H 3   1063  21  871   1732 H 3  22  858
395 22 878 H 3   1064 3  22  871   1733 H 3  22  859
396 22 879 H 3   1065  22  873 0   1734 H 3  23  859
397 23 880 H 3   1066 23  875   1735 H 3  23  861
398 23 880 H 3   1067 23   875   1736 H 3  23  860
399 24 881 H 3   1068 24  874   1737 H 3  24  861
400 24 881 H 3   1069 24  876   1738 H 3  24  861
401 25 882 H 3   1070 25  877   1739 H 3  25  861
402 25 883 H 3   1071 25  878   1740 H 3  25  861
403 25 883 H 3   1072 26  879 0   1741 H 3  26  863
404 26 884 M 2   1073 26  879 0   1742 H 3  26  865
405 26 885 M 2   1074 27  878 1   1743 H 3  27  863
406 27 886 H 3   1075  27  879 1   1744 H 3  27  863
407 27 887 M 2   1076  28  880 0   1745 H 3  28  865
408 28 887 M 2   1077  28  880 0   1746 H 3  28  866
409 28 887 M 2   1078 29    881   1747 H 3  29  866
410 29 888 H 3   1079 2 29  882 1   1748 H 3  29  867
411 29 887 M 2   1080 29   882  0   1749 M 2  30  867
412 30 888 M 2   1081 2 30  882    1750 M 2  30  867
413 30 888 H 3   1082 2 30  882    1751 H 3  31  867
414 31 889 H 3   1083 2 31 883  1   1752 H 3  31  867
415 31 890 H 3   1084 31 885     1753 H 3  32  868
416 32 889 H 3   1085 32 886   1754 H 3  32  870
417 32 890 H 3   1086 32 885   1755 H 3  32  870
418 33 891 H 3   1087 33 885     1756 H 3  33  871
419 33 891 H 3   1088 33 885   1757 H 3  33  871
420 33 892 H 3   1089 34  885   1758 H 3  34  871
421 34 891 H 3   1090 H   3 34 886     1759 H 3  34  871
422 34 891 M 2   1091 H 3 35 886 1   1760 H 3  35  872
423 35 892 M 2   1092 35   886    1761 H 3  35  872
424 35 893 M 2   1093 36 887   1762 H 3  36  872
425 36 893 M 2   1094 36 888   1763 H 3  36  873
426 36 893 M 2   1095 2 36 888  0   1764 H 3  37  872
427 37 893 M 2   1096 2 37 888  0   1765 H 3  37  873
428 37 894 M 2   1097 M  37  889 0   1766 H 3  38  873
429 38 895 M 2   1098 M  38  890   1767 H 3  38  874
430 38 896 M 2   1099  38  891 0     1768 H 3  39  875
431 39 895 M 2   1100  39 890  0     1769 H 3  39  875
432 39 896 M 2   1101  39 891 0     1770 H 3  39  875
433 40 895 M 2   1102 40 892 0     1771 H 3  40  876
434 40 896 M 2   1103 40 893 0     1772 H 3  40  876
435 40 897 M 2   1104 41 893   1773 H 3  41  876
436 41 897 M 2   1105 41 892 0     1774 H 3  41  877
437 41 898 M 2   1106 42 893  0     1775 H 3  42  877
438 42 899 M 2   1107 2   42  893     1776 H 3  42  878
439 42 899 M 2   1108 2   42  895   1777 H 3  43  877
440 43 899 M 2   1109 2   43 895   1778 H 3  43  877
441 43 900 M 2   1110 2   43 895   1779 H 3  44  878
442 44 900 M 2   1111 H 3 44 896 1   1780 H 3  44  879
443 44 901 M 2   1112 44  895 1   1781 H 3  45  879
444 45 N/A  N/A  N/A   1113 M 2 45 895 N/A     1782 H 3  45  878
445 45 N/A  N/A  N/A   1114 2 45 896  N/A     1783 H 3  45  879
446 46 N/A  N/A  N/A   1115 46 897 N/A     1784 H 3  46 1294 REVISED TO 883
447 46 N/A  N/A  N/A   1116 46 898 N/A     1785 H 3  46  881
448 47 N/A  N/A  N/A   1117 47 898 N/A     1786 N/A N/A  47  N/A
449 47 N/A  N/A  N/A   1118 47  898  N/A    1787 H 3  47  881
450 48 N/A  N/A  N/A   1119 L changed to M after we highlighted it. 1 changed to 2. 48 908 altered to 898 after we highlighted it. N/A     1788 H 3  48  881
451 48 N/A N/A   N/A   1120 48  900 N/A      1789 H 3  48  881
452 49 N/A  N/A  N/A   1121 2   48  901 N/A    1790 H 3  49  882
453 49 N/A  N/A  N/A   1122 2   49 901 N/A   1791 H 3  49  882
454 50 N/A  N/A  N/A   1123 2   49 900 N/A   1792 H 3  50  883
455 50 905 M 2   1124 H 3 50 900 1   1793 H 3  50  883
456 50 905 H 3   1125 H 3 50 900   1794 H 3  50  883
457 51 N/A  N/A  N/A   1126 2   51 901 N/A    1795 H 3  51  882
458 51 N/A  N/A  N/A   1127 2   51 910 altered to 901 N/A   1796 H 3  51  883
459 52 N/A  N/A  N/A   1128 M 2 52 902  N/A    1797 H 3  52  884
460 52 N/A  N/A  N/A   1129 52 902 N/A    1798 H 3  52  883
461 53 N/A  N/A  N/A   1130 53  902  N/A    1799 H 3  53  883
462 53 N/A  N/A  N/A   1131 53 902  N/A   1800 H 3  53  881
463 53 906 H 3   1132 2   53   902    1801 H 3  54  882
464 54 906 M 2   1133 2   54 902  0   1802 H 3  54  882
465 54 906 H 3   1134 54  902    1803 M 2  55  882
466 55 907 M 2   1135 M   55  901    1804 H 3  55  883
467 55 907 M 2   1136 55 901  0     1805 H 3  55  883
468 55 907 M 2   1137 56 901  0     1806 M 2  56  884
469 56 908 M 2   1138 56 901  0     1807 M 2  56  884
470 56 907 M 2   1139 M   57  901    1808 H 3  57  884
471 57 906 M 2   1140 57 901   1809 H 3  57  889
472 57 907 M 2   1141 57 902   1810 H 3  58  883
473 58 907 M 2   1142 58 902   1811 H 3  58  882
474 58 906 M 2   1143 58  901   1812 H 3  59  882
475 59 906 M 2   1144 59 902    1813 H 3  59  881
476 59 906 M 2   1145 59  907 revised to 903   1814 H 3  59  881
477 60 907 M 2   1146 M   2   60 902   1815 H 3  60  881
478 60 N/A N/A   N/A   1147 M 2   60   901 N/A   1816 M 2  60  882
479 61 N/A  N/A  N/A   1148 61 901   N/A    1817 M 2  61 882
480 61 N/A  N/A N/A    1149 61 902  N/A    1818 M 2  61  882
481 62 N/A  N/A  N/A   1150 62 902   N/A    1819 H 3  62  880
482 62 N/A  N/A  N/A   1151 62 901   N/A    1820 M 2  62  881
483 63 N/A  N/A  N/A   1152 2   62   901   N/A     1821 M 2  63  882
484 63 N/A  N/A  N/A   1153 2 63 900 N/A     1822 M 2  63  881
485 63 N/A  N/A  N/A   1154 2   63 900 N/A     1823 H 3  64  879
486 64 904 M 2   1155 2   64 900  0     1824 H 3  64  879
487 64 904 M 2   1156 2   64 900 0     1825 M 2 64  878
488 64 903 M 2   1157 2   65 900 0     1826 H 3  65  878
489 65 904 M 2   1158 M 65   898 0     1827 H 3  65  879
490 65 904 M 2   1159 2 66 898  0     1828 H 3  66 878
491 66 903 M 2   1160 66  1177, later dropped to 899 after we made an issue out of it.   1829 H 3  66  877
492 66 903 M 2   1161 2   66  1200 changed to 898.   1830 H 3  67  877
493 67 902 M 2   1162 M 2   67 897   1831 H 3  67  876
494 67 902 M 2   1163 M 2   67 896   1832 H 3  68  875
495 68 900 M 2   1164 2   68 896   1833 H 3  68  875
496 68 901 M 2   1165 2 68 897    1834 H 3  68  875
497 69 901 M 2   1166 M 2 69 895 0   1835 H 3  69  873
498 69 901 M 2   1167 M 2 69 894 0   1836 H 3  69  873
499 69 899 M 2   1168 2   70 894     1837 H 3  70  872
500 70 897 M 2   1169 H 3 70 894   1   1838 H 3  70  872
501 70 898 M 2   1170 H 71  893  1   1839 H 3  71  872
502 71 898 M 2   1171 H 3 71  892  1   1840 H 3  71  871
503 71 N/A M 2   1172 H 71 892  1   1841 H 3  72  870
504 72 895 M 2   1173 2   72 892    1842 H 3  72  869
505 72 895 M 2   1174 72  891   1843 H 3  72  869
506 73 894 M 2   1175 73 890   1844 H 3 73  869
507 73 894 M 2   1176 73   890   0     1845 H 3  73  866
508 73 893 M 2   1177 74 888 0     1846 H 3  73  868
509 74 895 M 2   1178 74  888   0      1847 H 3  74  866
510 74 892 M 2   1179 75 887   1848 H 3  75  865
511 75 892 M 2   1180 M   2   75  886 0   1849 H 3  75  864
512 75 890 M 2   1181 75   885 0   1850 H 3  76  864
513 76 889 M 2   1182 M   2   76 884   1851 H 3  76  864
514 76 888 M 2   1183 M   2   76   883   1852 H 3  77  863
515 77 888 M 2   1184 M   2   77 882   1853 M 2  77  862
516 77 888 M 2   1185 H 3 77   881 1     1854 M 2  77  861
517 77 885 M 2   1186 78 881   1     1855 M 2  78  861
518 78 885 M 2   1187 78   881  0     1856 H 3  78  859
519 78 884 M 2   1188 79 881  0     1857 H 3  79  858
520 79 884 M 2   1189 M   79   879   1858 H 3  79  857
521 79 882 M 2   1190 3 79 877   1859 H 3  80  857
522 80 881 M 2   1191 3 80 876   1860 H 3  80  857
523 80 881 M 2   1192 80  875   1861 H 3  81  855
524 81 880 M 2   1193 2 81 875     1862 H 3  81  854
525 81 878 M 2   1194 81   873   1863 M 2  81  853
526 82 878 M 2   1195 2   82 871   1864 H 3  82  852
527 82 877 H 3   1196 82   871   1865 H 3  82  852
528 82 876 M 2   1197 83 869   1866 H 3  83  850
529 83 875 M 2   1198 M (was L) 2 (was 1) 83 868   0 (was 1)   1867 H 3  84  848
530 83 873 M 2   1199 M (was L)  2 (was 1) 84 868 0 (was 1)   1868 H 3  84  848
531 84 872 M 2   1200 M (was L)  2 (was 1) 84   866  0 (was 1)   1869 H 3  84  846
532 84 872 M 2   1201 2   84  866     1870 H 3  85  845
533 85 871 M 2   1202 85 864     1871 H 3  85  844
534 85 869 M 2   1203 M   2   85   863   1872 H 3  86  843
535 86 868 M 2   1204 M   2   86 862   1873 H 3  86  842
536 86 867 M 2   1205 M   2   86  861   1874 H 3  86  840
537 86 865 M 2   1206 2   87  859   1875 H 3  87  839
538 87 865 M 2   1207 M 2   87  858 0   1876 H 3  87  838
539 87 864 M 2   1208 88 857  0   1877 H 3  88  837
540 88 862 M 2   1209 M   2   88   855   1878 M 2  88  835
541 88 861 M 2   1210 M   88  854   1879 M 2  89  842
542 89 867 M 2   1211 M   2   89 853    1880 M 2  89  831
543 89 858 M 2   1212 M   89 851   1881 M 2  90  832
544 90 WINTER 857 M 2   1213 2   90 851    1882 M 2   90  831
545 90 856 M 2   1214 2   90 850   1883 M 2  91  830
546 91 855 M 2   1215 H 3 91  848 1   1884 M 2  91  829
547 91 853 H 3   1216 91  847 1   1885 M 2  91  827
548 91 852 H 3   1217 M 92 846   1886 M 2  92  826
549 92 851 M 2   1218 92 845   1887 M 2  92  824
550 92 850 M 2   1219 93 844   1888 H 3  93  823
551 93 848 H 3   1220 M   2 93  842 1     1889 H 3  93 822
552 93 847 M 2   1221 M    93   847   1890 H 3  94  821
553 94 845 M 2   1222 94   840 0     1891 H 3  94  819
554 94 843 M 2   1223 2   94    839 0      1892 M 2  95  817
555 95 843 M 2   1224 2   95 837 0      1893 M 2  95  816
556 95 842 M 2   1225 2   95 836 0      1894 H 3  96  815
557 96 840 M 2   1226 M   96 835   1895 H 3  96  814
558 96 839 M 2   1227 M   96  833 0   1896 H 3  96  812
559 96 838 H 3   1228 M 2   97 832 1     1897 H 3  97  811
560 97 836 M 2   1229 2    97  832    1898 H 3  97  810
561 97 835 M 2   1230 98 830   1899 H 3  98  808
562 98 834 M 2   1231 98 828   1900 H 3  98  807
563 98 833 M 2   1232 99 827   1901 H 3  99  806
564 99 831 M 2   1233 2   99  826   1902 M 2  99  804
565 99 830 H 3   1234 M   99  824 1   1903 M 2  100  803
566 100 829 H 3   1235 M   100 824   1   1904 M 2  100  801
567 100 827 H 3   1236 M   100  822   1905 H 3  101  800
568 101 825 H 3   1237 M   101 820 1     1906 M 2  101  799
569 101 825 M 2   1238 M   101 819 0     1907 H 3  101  798
570 102 823 M 2   1239 M   102 818 0     1908 H 3  102  796
571 102 821 M 2   1240 M  102  816    1909 H 3  102  793
572 102 820 M 2   1241  103 816      1910 H 3  103  794
573 102 819 M 2   1242  103  815 0   1911 M 2  103  792
574 103 817 H 3   1243  104 814   1912 H 3  104  791
575 104 816 M 2   1244 M   2    104 812   1913 H 3  104  791
576 104 815 M 2   1245 M   2    105 811   1914 H 3  105  790
577 105 813 M 2   1246 2    105  810   1915 H 3  105  788
578 105 812 M 2   1247 2    105  809   1916 H 3  106 787
579 106 811 M 2   1248 2 106 807   1917 H 3  106  786
580 106 810 M 2   1249 106   806   1918 H 3  107  784
581 107 808 M 2   1250 M   107 804 0     1919 H 3 107  783
582 107 807 M 2   1251 M   107 803 0     1920 H 3  108  782
583 108 806 M 2   1252 M   2 108 802 0     1921 H 3  108  781
584 108 804 M 2   1253 M   108 800 0     1922 H 3  108  780
585 109 802 M 2   1254 M   109 799 0     1923 H 3  109  778
586 109 802 M 2   1255 2   109  798   1924 H 3  109  777
587 109 801 M 2   1256 2   110 795   1925 H 3  110 777
588 110 799 M 2   1257 M   110   794 0     1926 H 3  110 775
589 110 798 M 2   1258 M   111 794   0     1927 H 3  111  774
590 111 797 M 2   1259 M   111  794    0     1928 H 3  111  773
591 111 795 M 2   1260 112 792   1929 H 3  112  771
592 112 795 M 2   1261 112  793   1930 H 3  112  770
593 112 795 M 2   1262 2   112   790   1931 H 3  113  770
594 113 793 M 2   1263 2   113  788   1932 H 3  113  768
595 113 792 M 2   1264 M   113   787  0   1933 H 3  114  767
596 114 791 M 2   1265 M   114 787  0   1934 H 3  114 766
597 114 790 H 3   1266  114 787  1   1935 H 3  115  765
598 115 787 M 2   1267 2   115  786   1936 H 3  115  764
599 115 788 M 2   1268 2   115  784   1937 H 3  116 763
600 116 787 M 2   1269 M   116  782    1938 H 3  116  762
601 116 785 M 2   1270 M   116  782    1939 H 3  116  760
602 117 784 M 2   1271 117 781 0   1940 H 3  117  759
603 117 783 H 3   1272 117  780   1941 H 3  117  758
604 118 782 M 2   1273 M   118 778   1942 H 3  118  757
605 118 781 M 2   1274 M   118   777   1943 H 3  118  756
606 118 780 M 2   1275 2   119 775   1944 H 3  119  755
607 119 779 M 2   1276 L changed to M   119  774   1945 M 2  119  751
608 119 777 M (was L)  2 (was 1)    1277 H 3 120  774  1   1946 H 3  120  753
609 120 777 M 2   1278 M 2 120  778 0   1947 M 2  120  751
610 120 776 M 2   1279 3 121 772 1     1948 M 2  121  752
611 121 775 M 2   1280 121  771 1      1949 M 2  121  751
612 121 774 M 2   1281 122 769 1      1950 H 3  122  750
613 122 773 M 2   1282 122  768 0   1951 H 3  122  749
614 122 772 M 2   1283 3   123 768  1     1952 H 3  123  748
615 123 771 M 2   1284 123  767   1953 H 3  123  747
616 123 769 M 2   1285  2 123  766   1954 H 3  124  745
617 124 769 M 2   1286 124 765 0   1955 H 3  124  745
618 124 769 M 2   1287 M 124 764   1956 H 3  125  744
619 125 766 L 1   1288 2   125  763 N/A      (was 1)   1957 H 3  125  741
620 125 765 M 2   1289 N/A N/A  125 N/A  N/A    1958 H 3  126  741
621 126 765 M 2   1290 N/A  N/A  126 N/A  N/A    1959 H 3  126  740
622 126 763 M 2   1291 H 3 126 760 1   1960 H 3  127  740
623 127 763 M 2   1292 3 127 760 1   1961 H 3 127  742
624 127 762 M 2   1293 M   2 127 758 0     1962 H 3  128  738
625 128 761 M 2   1294 M   2 128  758 0     1963 H 3  128  737
626 128 760 M 2   1295 M    128 758     1964 H 3  129  736
627 129 759 M 2   1296 129 756   1965 H 3  129 735
628 129 759 M 2   1297 129 755   1966 H 3  130  735
629 130 759 M 2   1298 2   130  755  0     1967 H 3  130  734
630 130 757 H 3   1299 2   130 753 1   1968 H 3  131  732
631 131 756 H 3   1300 2   131 945 changed to 752 1     1969 H 3  131  732
632 131 755 H 3   1301 M   2    131   1154 changed to 752   1970 H 3  132 732
633 132 754 H 3   1302 M   2    132 751   1971 H 3  132  731
634 132 753 H 3   1303 132 751 0     1972 H 3  133  730
635 133 754 H 3   1304 M    2 133 750 1     1973 H 3  133  730
636 133 752 H 3   1305 3   133   749 0      1974 H 3  134  729
637 134 752 M 2   1306 3   134 748 0      1975 H 3  134  729
638 134 751 M 2   1307 3    134  748     1976 H 3  135  728
639 135 750 M 2   1308 3    135 748     1977 H 3  135  727
640 135 750 M 2   1309 135   747   1978 H 3  136  727
641 136 749 H 3   1310 136 745 1     1979 H 3  136  726
642 136 749 H 3   1311 H   136 745   1980 H 3  137  725
643 137 748 H 3   1312 H 3 137 745     1981 H 3  137  725
644 137 748 H 3   1313 H    137 745     1982 H 3  138  724
645 138 746 H 3   1314 H    138 744   1983 H 3  138  723
646 138 746 H 3   1315 H   138  744     1984 H 3  139  723
647 139 746 H 3   1316 H   139 744   0     1985 H 3  139  723
648 139 746 H 3   1317 139  743    1986 VH 4  140  723
649 140 745 H 3   1318 H   140  743  0     1987 VH 4  140  723
650 140 743 H 3   1319 140   742   1988 H 3  141  722
651 141 743 H 3   1320 3 141 741   1989 H 3  141  721
652 141 745 H 3   1321 141 740   1990 VH 4  142  720
653 142 744 H 3   1322 142 740     1991 VH 4  142  721
654 142 742 H 3   1323 H   142  738    1992 H 3  143  720
655 143 741 H 3   1324 H   143  738  0     1993 H 3  143  727
656 143 740 M 2   1325 144  738     1994 VH 4  144  718
657 144 739 H 3   1326 3 144  738     1995 VH 4  144  718
658 144 739 M 2   1327 145 736   1996 VH 4  145  719
659 145 738 M 2   1328 H   3   145  735    1997 H 3  145  717
660 145 735 M 2   1329 146  735     1998 H 3  146  716
661 146 735 H 3   1330 3 146   734  0   1999 H 3  146  717
662 146 735 H 3   1331 147  734 0     2000 VH 4  147  717
663 147 734 H 3   1332 3   147   734 0   2001 VH 4  147 913 revised to 716
664 147 732 H 3   1333 3   148   733   2002 VH 4  148 1167 revised to 715
665 148 735 H 3   1334 3   148  732   2003 H 3  148  716
666 148 736 H 3   1335 H 3 149   732  0     2004 H 3  149  716
667 149 736 H 3   1336 149   732    2005 H 3  149  716
668 150 734 H 3   1337 150  734    2006 H 3  150  715
669 150 735 H 3   1338 H   150  734  0     2007 H 3  151  716

 

Figure 2A shows the color for UV used on REMS reports. Figure 2B relates dose rate at MSL in micrograys per day to UV levels published on the REMS reports (see Table 2) for ~300 sols.

 Table 3  - The relationships (if any) of solar longitude (Ls),  lander altitude, lander latitude, day light hours each sol and UV recorded.

λsun (0 for spring in northern hemisphere). This is Ls.

Event

 

 

 

Latitude

(phi)

of MSL

δdegrees =

arcsin((sin(25.19)*sin(λsun))

 

H = arccos((SIN(-.17) - SIN(lw)*SIN(δ))/(COS(lw)*COS(δ)))

 

 

Day Length =

2*1.027491*H/360

 

 

Daylight in Hours David Roffman's Calculation (=E value * 24)

Pressure hPa/mb

 

 

UV at MSL

 

 

 

MSL altitude   at landing = -4,400 m

SOUTH

           

251

Perihelion at MSL

-4.59

-23.73035947

92.20894369

0.526354776

12.63251463

9.23

M

252

Max Pressure MSL Year 1

-4.59

-23.8779663

92.22332264

0.526436856

12.63448453

9.25

H

257

Max Pressure MSL Year 2

-4.59

-24.50122608

92.2844177

0.526785603

12.64285448

9.25

M

270

Summer begins at MSL

-4.59

-25.19

92.35267298

0.527175224

12.65220537

9.15

H

 

VL-1 altitude at landing =   -3,637 m

NORTH

 

 

 

 

 

 

251

Perihelion at VL-1

22.48

-23.73035947

79.72333454

0.455083382

10.92200116

9.12

 

270

Winter begins  at VL-1

22.48

-25.19

78.98389113

0.450862429

10.8206983

8.94

 

277

Max Pressure VL-1 Year 1

22.48

-24.98929018

79.08669714

0.451449275

10.8347826

9.57

 

 

 VL-2 altitude at landing =  -4,495 m

NORTH

 

 

 

 

 

 

251

Perihelion at VL-2

47.97

-23.73035947

61.12684504

0.348929351

8.374304418

10.03

 

270

Winter begins at VL-2

47.97

-25.19

58.87340259

0.336066063

8.065585506

10.2

 

279

Max Pressure VL-2 Year 1

47.97

-24.85866022

59.39411199

0.33903842

8.13692207

10.72

 

277

Max Pressure VL-2 Year 2

47.97

-24.96453989

59.22832995

0.338092089

8.114210129

10.24

 

 
      

Figures 3A through 3F show relative positions of Mars and Earth when Low Ultraviolet radiations was originally reported by REMS on Mars.

      Using an interactive 3D Diagram of the Solar System available at https://in-the-sky.org/solarsystem.php,  at first look it appeared that, as is shown in Figures 3A to 3F, it did not appear that there is a correlation between UV and the relative positions of Mars and Earth in their orbits around the sun (at least with respect to when Gale Crater, Mars was experiencing low UV).

       In the first 1031 sols that MSL was on Mars there were only 19 sols where the UV at MSL was categorized as low. All days were sunny there. For comparison purposes (without checking on sky cover) we looked at Las Vegas, Nevada for the same on the first 15 of these dates (by June 25, 2015 UV was at the extreme level in Las Vegas, detials for the full month of June wil be checked later). Eleven of the first 15 days showed low UV readings there too, one was moderate, one was high and two were very high.  As for the low readings in Las Vegas, it appears the general trend there is for low UV in the winter and high or very high UV in the summer (see Figure 7). Las Vegas was chosen for comparison purposes because it is found in a desert environment where most days are sunny. On average there are 210 sunny days each year (cloud cover 30% or less), and 82 partly sunny days with cloud cover between 40% and 70%, and 73 days that are cloudy. Given findings of relative humidity that is higher than expected at Gale Crater, and brine underground, it seems odd that not one day at MSL has been cloudy. Clouds can be seen drifting by behind the Telltale wind device on Phoenix on its Sol 103 here, but Phoenix landed in the Martian arctic. Stratus clouds were seen 16 km above the Mars Pathfinder - see Figure 4. It landed at 19.1 degrees North (which like MSL Curiosity is in the tropics).

 Table 4 - 15 Sols with low ultraviolet radiation at Gale Crater Mars and the corresponding UV for these dates in Las Vegas, Nevada BEFORE the REMS Team and JPL dropped all low pressure data.

MSL SOL

DATE ON EARTH

UV ON MARS

UV AT LAS VEGAS

608

4/22/2014

LOW

8 (VERY HIGH)

619

5/4/2014

LOW

9 (VERY HIGH)

833

12/9/2014

LOW

3 (MODERATE)

838

12/15/2014

LOW

2 (LOW)

839

12/16/2014

LOW

2 (LOW)

840

12/17/2014

LOW

2 (LOW)

841

12/18/2014

LOW

2 (LOW)

843

12/20/2014

LOW

2 (LOW)

844

12/21/2014

LOW

2 (LOW)

850

12/27/2014

LOW

2 (LOW)

851

12/28/2014

LOW

2 (LOW)

853

12/30/2014

LOW

2 (LOW)

854

12/31/2014

LOW

2 (LOW)

855

1/1/2015

LOW

2 (LOW)

939

3/28/2015

LOW

7 (HIGH)

 

 

Figure 4 - Stratus clouds seen 1 hours 40 minutes before sunrise at Mars Pathfinder. If the atmosphere there is as thin as NASA claims it is doubtful that there would be light so far before sunrise.

CLOUDS DO FORM AT LATITUDES SIMILAR TO THAT OF MSL CURIOSITY. So it is curious that no cloudy days have been seen on REMS reports for the first 1,215 sols at MSL. However a search on line reveals that clouds have been seen at MSL.

       The paper to read is Atmospheric movies acquired at the Mars Science Laboratory landing site: Cloud morphology, frequency and significance to the Gale Crater water cycle and Phoenix mission results by John E. Moore et al. (2015). The abstract states that, "We report on the first 360 sols (LS 150° to 5°), representing just over half a Martian year, of atmospheric monitoring movies acquired using the NavCam imager from the Mars Science Laboratory (MSL) Rover Curiosity. Such movies reveal faint clouds that are difficult to discern in single images. The data set acquired was divided into two different classifications depending upon the orientation and intent of the observation. Up to sol 360, 73 Zenith movies and 79 Supra-Horizon movies have been acquired and time-variable features could be discerned in 25 of each. The data set from MSL is compared to similar observations made by the Surface Stereo Imager (SSI) onboard the Phoenix Lander and suggests a much drier environment at Gale Crater (4.6°S) during this season than was observed in Green Valley (68.2°N) as would be expected based on latitude and the global water cycle. The optical depth of the variable component of clouds seen in images with features are up to 0.047 ± 0.009 with a granularity to the features observed which averages 3.8°. MCS also observes clouds during the same period of comparable optical depth at 30 and 50 km that would suggest a cloud spacing of 2.0 to 3.3 km. Multiple motions visible in atmospheric movies support the presence of two distinct layers of clouds. At Gale Crater, these clouds are likely caused by atmospheric waves given the regular spacing of features observed in many Zenith movies and decreased spacing towards the horizon in sunset movies consistent with clouds forming at a constant elevation. Reanalysis of Phoenix data in the light of the NavCam equatorial dataset suggests that clouds may have been more frequent in the earlier portion of the Phoenix mission than was previously thought."

 

CLOUDS AT MER OPPORTUNITY.


http://mars.nasa.gov/mer/spotlight/20080324_Opportunity.html

These clouds were seen at MER Opportunity. It landed at 1.9462°S 354.4734°E[6] The MSL curiosity landed at a latitude of 4.59 degrees South. The approximate difference in latitude  (4.59-1.95) is only 2.64 degrees. As each one degree difference of latitude in Mars is about 59 km, these clouds, though not at the longitude of MSL, were only 155.76 km (96.7847769 miles) north of Curiosity's latitude. 

This video animation shows wispy clouds in the sky moving slowly toward the viewer.


Figure 5 above - Opportunity turned its rover eyes skyward to observe clouds drifting overhead that look like cirrus clouds on Earth -- featherlike formations composed mostly of ice crystals. Image courtesy: NASA/JPL-Caltech/Cornell/ASU/Texas A&M/Navigation camera

Figure 6 - Distribution of very high and low Áv values at MSL as related to solar longitude as Mars orbits the sun. All low Áv values were removded by the REMS Team or JPL in 2016, but those shown above were reinserted by them in 2017.

LS FOR SOLS AT MSL WITH VERY HIGH AND LOW ULTRAVIOLET RADIATION. In the first 1,254 sols of MSL operations at Gale Crater, Mars, there were 191 sols with Very High UV. The range in solar longitude (Ls) for UV ratings was between 155 and 347, with the average Ls 251 degrees. Of interest, the Ls at perihelion, when Mars is closest to the sun, is also 251 degrees. Thus it appears that if the data is trustworthy, UV is highest at MSL Curiosity (in the southern hemisphere) when Curiosity is closest to the sun. The season in the southern hemisphere when high UV was recorded was from spring to summer. Ls 251 is late spring. However, it does not follow that lowest UV is when Mars is at aphelion (further from the sun) at Ls 71 although it was reported for Ls 83 and 84. Low UV was originally found on 15 sols (actually on 4 more sols, but JPL revised the data) between Ls 119 and 317 and one at Ls 3 but the fact that Low UV was claimed for all four seasons (winter - Ls 119), spring (intermittently from Ls 249 to 263), summer (intermittently from Ls 317 to 354), and fall (intermittently from Ls 3 to 84) before th