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

8844 97 628 97 619 4.47 72.20 59.07 278.56 0.8653 -146.1 -38.5


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SOHO MDI 2000-01-27 22:58:32 UT

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

1 16 153 19 176 4.07 77.25 64.11 277.21 0.9063 280.0 86.7
2 8 -1 9 -1 4.01 76.53 63.40 277.25 0.9010 776.2 999999
3 0 13 0 14 3.85 75.57 62.44 277.23 0.8935 718.0 537.5
4 2 63 2 65 3.41 75.02 61.88 276.83 0.8887 495.3 650.9
5 0 8 0 9 2.97 74.81 61.67 276.37 0.8865 434.0 402.4
6 7 -4 7 -4 4.34 73.69 60.55 278.10 0.8791 801.4 999999
7 3 -4 3 -4 4.55 73.40 60.27 278.38 0.8770 663.1 999999
8 0 3 0 3 3.47 72.96 59.82 277.23 0.8718 224.0 206.4
9 3 32 3 31 4.81 72.36 59.23 278.87 0.8686 887.9 551.7
10 5 -9 5 -9 5.03 72.24 59.11 279.15 0.8679 737.1 999999
11 0 6 0 5 2.82 71.32 58.18 276.77 0.8568 -360.0 -262.1
12 13 254 12 231 3.40 69.86 56.72 277.70 0.8443 -625.3 -308.7
13 15 -12 14 -12 4.28 69.32 56.18 278.84 0.8407 -824.9 999999
14 6 -12 6 -12 4.75 68.82 55.69 279.49 0.8367 -1018.3 999999
15 6 -12 5 -12 5.26 68.48 55.34 280.17 0.8344 -979.9 999999
16 13 96 12 85 6.44 68.04 54.91 281.66 0.8324 -972.6 -442.9


  • 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.