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

8788 117 621 192 956 10.37 308.78 -70.93 79.16 0.9427 94.7 55.9


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SOHO MDI 1999-12-03 19:11:33 UT

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

1 0 5 0 16 13.72 299.35 -80.37 76.18 0.9871 153.0 170.8
2 15 44 22 63 11.05 310.03 -69.68 78.42 0.9410 -548.5 -228.9
3 20 416 24 505 10.15 314.56 -65.15 79.07 0.9115 1018.7 196.5
4 19 114 43 267 11.42 302.63 -77.08 78.40 0.9763 -470.8 -177.7
5 9 -3 12 -3 10.14 312.91 -66.80 79.20 0.9228 264.6 999999
6 2 -2 3 -2 10.38 310.36 -69.35 79.11 0.9389 -31.8 999999
7 21 -4 51 -4 11.07 301.53 -78.18 78.80 0.9802 -140.7 999999
8 16 -3 19 -3 9.78 313.86 -65.85 79.53 0.9162 580.4 999999
9 15 -3 18 -3 9.45 314.49 -65.22 79.84 0.9117 1075.4 999999
10 0 9 0 26 10.11 299.12 -80.59 79.84 0.9875 318.0 293.5
11 0 20 0 45 9.73 302.24 -77.48 80.15 0.9776 -210.0 -284.9
12 0 13 0 34 9.27 300.93 -78.79 80.66 0.9820 -136.0 -5.6


  • 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.