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

8844 141 757 83 448 5.11 71.60 31.80 288.05 0.5538 -421.2 13.5


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SOHO MDI 2000-01-25 22:23:32 UT

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

1 20 288 12 176 3.91 74.64 34.84 284.37 0.5906 1579.3 658.8
2 16 -1 10 -1 4.49 74.63 34.82 285.33 0.5925 1227.2 999999
3 6 -1 4 -1 4.59 73.70 33.89 285.94 0.5803 1504.4 999999
4 0 20 0 12 4.75 72.92 33.11 286.58 0.5703 931.0 790.0
5 5 16 3 9 5.27 72.59 32.78 287.64 0.5679 861.8 592.8
6 0 6 0 3 3.78 72.19 32.38 285.28 0.5562 967.0 782.9
7 0 9 0 5 4.03 71.84 32.03 285.90 0.5523 941.0 706.5
8 5 12 3 7 4.69 71.82 32.01 287.05 0.5549 1034.8 749.7
9 0 5 0 3 5.93 71.62 31.81 289.29 0.5577 252.0 280.8
10 0 4 0 2 5.34 70.91 31.10 288.70 0.5452 607.0 490.1
11 5 386 3 224 6.10 70.46 30.65 290.30 0.5427 -744.6 -593.7
12 0 11 0 7 6.62 69.87 30.06 291.58 0.5373 -670.0 -668.1
13 6 -11 3 -11 4.90 69.72 29.91 288.62 0.5265 -863.6 999999
14 9 -11 5 -11 5.67 69.63 29.82 290.07 0.5290 -1103.9 999999
15 26 -11 15 -11 5.30 69.30 29.49 289.62 0.5225 -1888.8 999999
16 10 -11 6 -11 6.58 69.16 29.35 292.01 0.5273 -1227.5 999999
17 19 -11 11 -11 5.80 69.06 29.25 290.67 0.5218 -1650.5 999999
18 14 -11 8 -11 6.45 68.70 28.90 292.08 0.5203 -1850.4 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.