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

12201m 0.00 15.41 0.00 9.47 -20.37 79.05 -27.10 133.92 0.5936 713.8 588.7


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SDO HMI 2014-11-03 06:00:28 UT

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

1 0.00 2.77 0.00 1.62 -20.93 85.19 -20.95 141.49 0.5385 878.0 776.1
2 0.00 0.61 0.00 0.36 -21.07 85.11 -21.04 141.54 0.5407 718.0 620.0
3 0.00 1.64 0.00 1.00 -20.25 79.50 -26.65 133.99 0.5870 644.0 526.2
4 0.00 1.04 0.00 0.64 -20.42 79.25 -26.89 133.96 0.5911 606.0 420.3
5 0.00 0.61 0.00 0.37 -20.67 78.67 -27.48 133.69 0.5992 700.0 592.3
6 0.00 1.12 0.00 0.69 -20.54 78.55 -27.59 133.41 0.5993 726.0 654.5
7 0.00 2.16 0.00 1.35 -20.01 76.92 -29.22 131.15 0.6115 804.0 564.7
8 0.00 1.30 0.00 0.82 -20.35 76.63 -29.51 131.33 0.6173 656.0 472.1
9 0.00 2.25 0.00 1.42 -20.23 76.41 -29.74 130.96 0.6186 680.0 573.6
10 0.00 0.87 0.00 0.54 -19.97 76.39 -29.76 130.60 0.6167 848.0 746.5
11 0.00 1.04 0.00 0.66 -19.77 75.70 -30.45 129.72 0.6223 592.0 391.0


  • 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.