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

8844 96 583 100 606 4.45 72.18 60.71 278.25 0.8789 -64.3 -38.5


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SOHO MDI 2000-01-28 02:00:32 UT

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

1 18 138 22 170 4.11 77.33 65.86 276.98 0.9187 303.4 44.5
2 5 -1 7 -1 4.09 76.67 65.20 277.06 0.9142 754.2 999999
3 0 12 0 14 3.90 75.91 64.44 276.98 0.9086 575.0 513.1
4 2 60 2 66 3.37 75.13 63.66 276.51 0.9023 395.8 582.4
5 12 -4 13 -4 3.78 74.07 62.60 277.13 0.8947 832.3 999999
6 -5 -4 -5 -4 4.15 73.95 62.48 277.57 0.8942 999999 999999
7 5 31 6 33 4.69 72.55 61.08 278.40 0.8838 940.9 621.6
8 4 -7 4 -7 4.95 72.43 60.96 278.72 0.8832 857.5 999999
9 0 2 0 2 2.93 71.01 59.54 276.67 0.8688 -122.0 -154.5
10 0 5 0 5 5.42 70.64 59.17 279.58 0.8690 369.0 467.3
11 12 250 11 237 3.33 69.85 58.38 277.33 0.8592 -623.7 -280.4
12 12 -11 11 -11 4.22 69.28 57.81 278.46 0.8554 -876.9 999999
13 8 -11 8 -11 4.68 68.76 57.29 279.09 0.8514 -950.6 999999
14 5 -11 4 -11 5.42 68.30 56.82 280.04 0.8484 -679.4 999999
15 0 2 0 2 6.05 68.39 56.92 280.76 0.8503 -357.0 -324.2
16 13 83 12 77 6.44 67.97 56.49 281.31 0.8471 -1032.6 -415.1


  • 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.