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

12014 55.33 234.42 55.90 234.27 -13.49 168.50 -61.06 101.58 0.8701 555.0 198.3


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SDO HMI 2014-03-20 23:00:30 UT

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

1 21.09 144.22 20.14 138.17 -14.55 170.09 -59.47 102.78 0.8569 880.8 292.4
2 8.10 -1.00 7.91 -1.00 -14.47 169.32 -60.23 102.68 0.8636 300.3 999999
3 0.00 1.13 0.00 1.13 -15.11 168.70 -60.85 103.41 0.8689 282.0 225.7
4 0.00 2.00 0.00 2.00 -13.93 168.55 -61.00 102.05 0.8701 164.0 55.5
5 0.00 1.05 0.00 1.03 -11.46 169.18 -60.38 99.19 0.8651 451.0 402.7
6 20.13 62.74 20.81 64.99 -12.07 167.41 -62.15 99.94 0.8797 614.6 111.5
7 1.13 9.59 1.27 10.79 -12.58 164.83 -64.72 100.59 0.8997 -621.2 -447.4
8 0.00 0.26 0.00 0.30 -12.77 164.67 -64.89 100.82 0.9009 -286.0 -269.0
9 0.00 0.96 0.00 1.09 -10.54 164.57 -64.98 98.34 0.9022 318.0 288.1
10 0.00 1.05 0.00 1.19 -10.24 164.62 -64.93 98.01 0.9020 598.0 543.6
11 0.44 1.74 0.50 2.00 -9.88 164.40 -65.16 97.62 0.9038 491.4 466.1
12 0.00 0.44 0.00 0.50 -9.90 164.31 -65.24 97.65 0.9044 512.0 563.0
13 3.92 6.97 4.56 8.12 -10.20 163.98 -65.58 98.00 0.9067 254.6 66.7
14 0.00 0.70 0.00 0.82 -9.31 163.65 -65.90 97.04 0.9095 286.0 208.1
15 0.52 1.57 0.71 2.14 -15.76 159.74 -69.81 104.22 0.9334 -453.2 -391.7


  • 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.