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

8844 119 667 69 389 5.16 71.52 29.96 289.22 0.5285 -287.3 90.0


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SOHO MDI 2000-01-25 19:11:32 UT

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spotProj. UProj. WSCorr. UCorr. WSBLLCMPos. angler MU MP

1 3 265 2 158 4.91 74.73 33.17 286.82 0.5717 580.4 755.0
2 11 -1 7 -1 4.44 74.52 32.96 286.12 0.5668 1069.5 999999
3 15 -1 9 -1 3.97 74.46 32.89 285.35 0.5640 1571.6 999999
4 5 -1 3 -1 4.19 74.19 32.63 285.86 0.5612 1795.6 999999
5 11 -1 6 -1 4.61 74.08 32.51 286.64 0.5613 1292.9 999999
6 5 -1 3 -1 4.60 73.21 31.65 287.09 0.5493 1453.7 999999
7 0 11 0 6 4.48 72.26 30.70 287.39 0.5355 888.0 767.9
8 0 10 0 6 5.25 72.21 30.65 288.80 0.5384 683.0 580.4
9 0 8 0 5 3.88 72.06 30.49 286.44 0.5300 752.0 748.4
10 0 2 0 1 5.82 71.89 30.32 290.00 0.5366 519.0 425.2
11 0 6 0 4 4.72 71.65 30.08 288.18 0.5280 675.0 588.8
12 0 11 0 6 4.09 71.58 30.01 287.09 0.5241 712.0 703.7
13 0 4 0 3 5.44 71.29 29.72 289.71 0.5264 96.0 122.6
14 6 338 3 193 6.08 70.88 29.31 291.13 0.5241 -723.8 -523.5
15 0 5 0 3 4.39 70.48 28.92 288.29 0.5099 -18.0 24.5
16 2 7 1 4 6.55 70.03 28.46 292.57 0.5149 -847.8 -632.1
17 34 -14 20 -14 5.31 69.35 27.78 290.78 0.4984 -1647.0 999999
18 -17 -14 -17 -14 5.70 69.28 27.71 291.55 0.4996 999999 999999
19 5 -14 3 -14 6.59 69.24 27.68 293.24 0.5042 -1291.0 999999
20 22 -14 12 -14 6.30 68.79 27.22 293.05 0.4962 -1800.8 999999


  • 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
  • MU -  Mean magnetic field within the umbra contour averaged the pixel values with sign.
  • MP -  Mean magnetic field within the penumbra contour averaged the pixel values with sign.