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

9173 142 861 110 659 -12.29 350.96 45.93 247.37 0.7595 60.5 110.1


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SOHO MDI 2000-10-04 09:31:32 UT

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

1 18 258 16 227 -11.08 358.66 53.63 251.99 0.8331 -684.3 -319.9
2 13 -1 12 -1 -11.18 357.95 52.92 251.65 0.8268 -1170.2 999999
3 8 -1 7 -1 -11.63 357.61 52.58 251.00 0.8249 -774.7 999999
4 8 100 6 75 -12.82 350.82 45.78 246.94 0.7619 -595.1 -353.4
5 7 -4 5 -4 -12.52 350.18 45.15 247.02 0.7540 -921.9 999999
6 4 -4 3 -4 -12.81 350.25 45.21 246.69 0.7559 -905.4 999999
7 10 25 8 19 -11.47 349.78 44.75 248.16 0.7456 -773.4 -719.8
8 0 16 0 12 -12.64 349.19 44.16 246.41 0.7441 -234.0 -392.2
9 14 129 10 93 -13.67 347.66 42.63 244.36 0.7322 625.9 432.2
10 6 -9 5 -9 -12.91 346.90 41.87 244.93 0.7205 857.7 999999
11 13 324 9 226 -12.50 345.86 40.83 244.91 0.7071 1275.9 644.1
12 9 -11 6 -11 -12.00 345.71 40.68 245.49 0.7031 1300.2 999999
13 0 5 0 4 -10.85 345.51 40.48 246.92 0.6954 892.0 692.8
14 0 4 0 3 -10.48 345.45 40.42 247.39 0.6930 622.0 499.4
15 11 -11 8 -11 -13.32 345.87 40.83 243.85 0.7112 945.2 999999
16 6 -11 4 -11 -13.85 345.82 40.78 243.14 0.7133 697.2 999999
17 5 -11 4 -11 -11.65 345.33 40.30 245.76 0.6971 1516.2 999999
18 10 -11 7 -11 -13.69 345.31 40.28 243.06 0.7069 1097.3 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.