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

8076 90 575 60 406 28.04 108.95 42.26 303.37 0.7098 202.9 132.7


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SOHO MDI 1997-09-02 21:59:03 UT

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

1 26 252 20 191 26.38 115.02 48.33 298.63 0.7648 814.4 375.4
2 10 -1 7 -1 26.56 113.88 47.19 299.20 0.7541 876.9 999999
3 3 -1 2 -1 26.54 113.16 46.47 299.39 0.7468 901.9 999999
4 9 18 6 13 27.62 110.46 43.77 301.73 0.7230 582.8 444.0
5 0 7 0 5 26.82 108.28 41.59 301.52 0.6972 435.0 413.2
6 7 29 5 20 28.06 108.73 42.05 303.00 0.7070 521.5 277.1
7 0 6 0 4 28.73 108.88 42.20 303.83 0.7114 -317.0 -159.3
8 0 5 0 4 29.68 107.73 41.05 305.60 0.7039 -212.0 -200.0
9 0 8 0 6 28.87 105.99 39.30 305.34 0.6823 189.0 239.6
10 0 24 0 16 29.67 106.30 39.61 306.26 0.6894 697.0 687.4
11 1 45 0 30 28.85 105.12 38.43 305.75 0.6731 806.3 402.6
12 1 -11 0 -11 29.17 104.29 37.60 306.63 0.6661 -34.0 999999
13 0 3 0 2 30.34 103.60 36.91 308.60 0.6656 281.0 233.1
14 1 178 0 115 30.01 101.55 34.87 309.37 0.6427 -578.7 -476.1
15 9 -14 6 -14 29.38 101.25 34.56 308.70 0.6357 -937.4 999999
16 19 -14 12 -14 30.54 101.27 34.59 310.29 0.6432 -887.0 999999
17 4 -14 2 -14 30.34 100.48 33.79 310.53 0.6338 -848.5 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.