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

8889 155 976 87 546 20.12 291.30 0.50 358.98 0.4592


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

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spotProj. UProj. WSCorr. UCorr. WSBLLCMPos. angler

1 39 264 22 147 18.75 299.66 8.86 341.52 0.4620
2 0 4 0 2 17.08 299.29 8.49 341.01 0.4355
3 9 -1 5 -1 18.83 299.05 8.24 342.77 0.4601
4 0 4 0 2 18.00 298.39 7.59 343.53 0.4449
5 0 8 0 4 17.74 298.06 7.25 344.06 0.4395
6 0 4 0 2 19.06 297.37 6.57 346.25 0.4566
7 0 1 0 0 18.19 297.05 6.25 346.42 0.4424
8 0 14 0 8 17.97 296.56 5.75 347.35 0.4373
9 0 5 0 3 19.39 296.36 5.55 348.46 0.4582
10 0 6 0 3 18.38 295.22 4.42 350.38 0.4396
11 0 4 0 2 17.78 294.23 3.43 352.31 0.4278
12 0 3 0 1 16.72 294.13 3.33 352.19 0.4109
13 0 6 0 4 19.36 293.16 2.36 355.04 0.4506
14 0 7 0 4 19.31 292.26 1.46 356.92 0.4489
15 26 157 15 88 20.61 292.11 1.30 357.38 0.4690
16 0 6 0 4 22.50 292.04 1.24 357.69 0.4980
17 0 4 0 2 21.79 290.63 -0.18 0.34 0.4868
18 59 464 33 261 20.80 286.50 -4.31 8.51 0.4765
19 5 -18 3 -18 21.12 285.62 -5.19 10.09 0.4834
20 11 -18 6 -18 21.13 284.91 -5.89 11.42 0.4856
21 6 -18 3 -18 20.83 284.76 -6.05 11.85 0.4815
22 0 4 0 2 20.93 283.63 -7.17 13.92 0.4869
23 0 6 0 4 19.94 280.94 -9.86 19.51 0.4842
24 0 5 0 3 23.22 280.11 -10.69 18.68 0.5345


  • 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