groupProj. UProj. WSCorr. UCorr. WS BLLCMPos. angler

8882 306 2364 197 1519 -16.21 330.19 39.38 253.13 0.6380


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SOHO MDI 2000-03-01 12:36:32 UT

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spotProj. UProj. WSCorr. UCorr. WSBLLCMPos. angler

1 8 2241 5 1443 -17.71 334.35 43.55 251.85 0.6931
2 10 -1 7 -1 -17.17 334.14 43.33 252.58 0.6895
3 67 -1 45 -1 -16.06 333.77 42.96 254.13 0.6833
4 32 -1 22 -1 -16.40 332.93 42.13 253.47 0.6736
5 5 -1 3 -1 -15.61 332.03 41.22 254.49 0.6610
6 5 -1 3 -1 -17.13 332.21 41.40 252.24 0.6660
7 18 -1 12 -1 -16.14 331.79 40.98 253.65 0.6589
8 0 2 0 1 -18.95 332.35 41.55 249.60 0.6717
9 0 7 0 5 -13.97 330.92 40.11 256.81 0.6445
10 9 -1 6 -1 -15.61 330.60 39.80 254.23 0.6429
11 11 -1 7 -1 -15.17 329.62 38.82 254.72 0.6295
12 6 74 4 46 -12.17 328.49 37.68 259.37 0.6103
13 4 -1 3 -1 -15.04 328.78 37.97 254.75 0.6182
14 5 -12 3 -12 -12.47 328.09 37.28 258.83 0.6052
15 0 4 0 3 -13.71 327.71 36.91 256.72 0.6017
16 4 -1 2 -1 -15.51 327.76 36.96 253.77 0.6057
17 0 7 0 4 -13.15 326.82 36.02 257.50 0.5887
18 6 -1 4 -1 -16.09 327.34 36.53 252.70 0.6013
19 0 10 0 6 -11.87 326.27 35.47 259.62 0.5795
20 6 -1 3 -1 -16.01 326.72 35.92 252.66 0.5930
21 7 14 4 8 -12.54 326.04 35.23 258.41 0.5771
22 43 -1 26 -1 -16.61 326.65 35.84 251.65 0.5935
23 33 -1 21 -1 -17.36 326.67 35.86 250.41 0.5957
24 0 5 0 3 -13.31 325.68 34.87 257.02 0.5732
25 27 -1 17 -1 -16.50 325.44 34.64 251.46 0.5770


  • Proj. U -  Projected umbra area in millionths of solar disc, negative values indicate
    that the umbra consists of fragmented regions which cannot be separated without losing umbral area.
    In this way several spots (intensity minima in the umbra) have a common umbra, e.g. -2 means that
    the given spot shares an umbra with spot No.2, and the common U value is indicated at spot No.2.
  • Proj. WS -  Projected whole spot area in millionths of solar disc, negative values indicate
    that several umbras have a common penumbra, e.g. -7 means that the given umbra shares
    a penumbra with umbra No.7, and the WS value is indicated at No.7.
  • Corr. U -  Corrected umbra area in millionths of solar hemisphere, for negative values see above
  • Corr. WS -  Corrected whole spot area in millionths of solar hemisphere, for negative values see above
  • B -  Heliographic latitude B; positive: North, negative: South
  • L -  Heliographic longitude L
  • LCM -  Longitudinal distance from the Sun's central meridian
  • Pos. angle -  Position angle
  • r -  Distance from the centre of Sun's disc in terms of Sun's radius