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

9070 74 453 53 319 18.99 31.33 -43.77 66.40 0.7154 348.4 -9.5


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SOHO MDI 2000-07-04 20:47:31 UT

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

1 0 4 0 2 18.07 41.10 -34.01 63.65 0.5956 689.0 618.8
2 0 4 0 2 18.24 38.60 -36.50 64.66 0.6274 648.0 469.1
3 29 138 20 93 19.54 34.60 -40.51 64.51 0.6804 1176.2 485.7
4 -3 -3 -3 -3 19.74 34.26 -40.84 64.37 0.6850 999999 999999
5 0 3 0 2 20.70 33.33 -41.78 63.41 0.6992 521.0 456.5
6 0 2 0 1 20.37 33.33 -41.78 63.87 0.6980 486.0 460.4
7 10 34 7 24 20.54 32.35 -42.76 64.02 0.7095 808.3 213.5
8 0 5 0 3 18.16 32.89 -42.21 67.10 0.6954 -759.0 -647.0
9 2 11 2 8 19.45 32.03 -43.08 65.62 0.7094 418.3 232.2
10 3 24 2 17 18.01 31.16 -43.94 67.87 0.7147 -854.1 -681.5
11 0 3 0 2 19.60 30.63 -44.47 65.89 0.7254 106.0 34.6
12 15 204 11 149 18.24 29.79 -45.31 67.97 0.7307 -1160.8 -274.4
13 6 -12 4 -12 18.77 29.55 -45.55 67.34 0.7348 -719.9 999999
14 0 7 0 5 19.25 29.26 -45.84 66.78 0.7393 296.0 163.9
15 9 -12 7 -12 18.84 28.31 -46.79 67.60 0.7484 896.0 999999
16 0 5 0 4 17.58 27.84 -47.27 69.37 0.7504 -772.0 -616.6
17 0 9 0 7 17.36 27.42 -47.68 69.77 0.7544 -432.0 -389.4


  • 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.