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

12121n 0.00 19.95 0.00 11.78 11.42 259.18 -32.33 76.98 0.5407 392.9 262.1


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SDO HMI 2014-07-30 10:00:40 UT

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

1 0.00 1.72 0.00 0.91 13.85 272.02 -19.48 65.42 0.3576 -867.0 -657.4
2 0.00 1.45 0.00 0.79 16.24 268.70 -22.81 62.80 0.4202 -743.0 -596.3
3 0.00 1.63 0.00 0.95 15.94 261.37 -30.14 68.37 0.5214 -737.0 -541.1
4 0.00 0.82 0.00 0.48 16.45 259.08 -32.42 68.54 0.5546 744.0 616.4
5 0.00 1.63 0.00 0.95 7.69 259.23 -32.28 84.53 0.5337 716.0 576.3
6 0.00 1.00 0.00 0.59 9.96 258.82 -32.68 80.34 0.5416 788.0 617.9
7 0.00 1.72 0.00 1.01 8.58 258.75 -32.76 82.91 0.5413 859.0 633.9
8 0.00 1.09 0.00 0.64 9.00 258.59 -32.91 82.14 0.5438 658.0 492.4
9 0.00 1.36 0.00 0.81 10.57 258.23 -33.27 79.32 0.5509 700.0 408.0
10 0.00 0.63 0.00 0.38 9.87 258.28 -33.23 80.59 0.5493 612.0 495.3
11 0.00 1.18 0.00 0.70 5.35 258.30 -33.21 88.86 0.5475 618.0 457.2
12 0.00 1.36 0.00 0.83 12.70 255.63 -35.88 76.14 0.5911 686.0 485.4
13 0.00 0.91 0.00 0.56 12.46 254.66 -36.85 76.75 0.6038 652.0 528.5
14 0.00 1.54 0.00 0.95 10.66 254.81 -36.69 79.72 0.5990 332.0 303.2
15 0.00 1.00 0.00 0.62 4.61 254.26 -37.25 89.82 0.6055 625.0 528.9
16 0.00 0.91 0.00 0.61 19.45 249.52 -41.99 67.41 0.6855 644.0 574.2


  • 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.