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

9169 66 424 163 1066 9.47 81.69 79.53 278.36 0.9807 156.3 191.4


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SOHO MDI 2000-09-30 01:35:32 UT

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

1 0 5 0 22 6.28 85.83 83.68 275.54 0.9931 24.0 106.3
2 10 416 35 1038 9.24 84.85 82.69 278.41 0.9903 -351.2 193.0
3 5 -2 11 -2 7.46 80.73 78.57 276.22 0.9786 344.5 999999
4 11 -2 29 -2 9.76 82.42 80.26 278.71 0.9835 -16.1 999999
5 7 -2 15 -2 8.82 80.29 78.13 277.56 0.9766 430.6 999999
6 4 -2 10 -2 9.24 80.42 78.26 278.01 0.9769 392.9 999999
7 9 -2 20 -2 9.72 80.03 77.87 278.46 0.9753 402.8 999999
8 20 -2 43 -2 10.38 80.19 78.04 279.15 0.9757 372.7 999999
9 0 3 0 6 10.95 76.87 74.71 279.49 0.9614 179.0 227.3


  • 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.