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

8513 57 284 36 181 -18.18 233.07 -38.30 111.54 0.6349 -218.4 134.1


previous   or   next   observation for the same group / back to the solar disc

SOHO MDI 1999-04-10 17:35:32 UT

No observation available


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

1 0 8 0 5 -16.76 237.06 -34.31 110.71 0.5793 -1277.0 -928.8
2 0 4 0 2 -18.47 236.13 -35.24 113.15 0.5974 622.0 322.4
3 0 5 0 3 -17.55 236.20 -35.18 111.68 0.5934 -916.0 -705.4
4 23 105 14 65 -17.60 235.63 -35.74 111.54 0.6008 -1340.7 -587.6
5 -4 -4 -4 -4 -17.34 235.44 -35.94 111.05 0.6025 999999 999999
6 10 -4 6 -4 -17.35 234.93 -36.45 110.88 0.6092 -924.6 999999
7 0 3 0 2 -16.98 233.99 -37.38 109.96 0.6201 -315.0 -308.8
8 0 3 0 2 -17.84 233.73 -37.64 111.23 0.6260 -351.0 -193.2
9 0 3 0 2 -18.18 233.39 -37.99 111.64 0.6314 -270.0 -124.7
10 3 23 2 15 -19.65 232.40 -38.97 113.53 0.6483 803.3 747.8
11 0 4 0 2 -18.65 232.53 -38.85 112.06 0.6436 558.0 515.0
12 4 120 3 79 -18.98 232.01 -39.36 112.38 0.6510 789.8 613.8
13 14 -12 9 -12 -18.45 230.70 -40.67 111.18 0.6653 1158.7 999999
14 3 -12 2 -12 -19.16 230.49 -40.88 112.16 0.6698 770.3 999999
15 0 6 0 4 -17.81 230.78 -40.60 110.26 0.6627 710.0 649.2


  • 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.