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

12021 124.41 514.81 66.12 274.28 -13.38 73.20 -20.64 110.13 0.3666 -149.1 -137.7


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

SDO HMI 2014-03-31 06:00:32 UT

No observation available
See sunspots with tool (Click here to study sunspot positions and configurations with tool using white-light and magnetogram images and polarity drawing)
(It is recommended to set high resolution on your display!)


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

1 0.00 1.23 0.00 0.64 -11.71 77.12 -16.72 108.44 0.2983 935.0 716.1
2 1.75 4.83 0.91 2.52 -13.66 76.79 -17.05 114.18 0.3137 930.3 723.5
3 3.51 9.12 1.83 4.75 -13.24 76.82 -17.02 112.94 0.3107 1085.9 849.5
4 0.00 1.49 0.00 0.77 -11.73 76.86 -16.98 108.28 0.3024 850.0 710.3
5 0.00 1.23 0.00 0.64 -11.84 76.50 -17.34 108.32 0.3086 1021.0 774.0
6 0.00 2.28 0.00 1.19 -12.07 76.32 -17.51 108.90 0.3124 1003.0 819.4
7 0.00 2.19 0.00 1.14 -11.80 76.28 -17.56 108.01 0.3119 666.0 735.8
8 0.61 170.64 0.32 89.49 -11.94 76.04 -17.79 108.26 0.3162 918.7 380.5
9 18.95 -8.00 9.90 -8.00 -12.48 75.97 -17.86 109.84 0.3198 1281.7 999999
10 2.28 -8.00 1.19 -8.00 -13.20 75.89 -17.95 111.89 0.3248 878.2 999999
11 17.55 -8.00 9.20 -8.00 -12.65 75.48 -18.36 109.88 0.3283 1194.8 999999
12 0.00 1.05 0.00 0.56 -18.43 74.86 -18.98 124.37 0.3754 -690.0 -533.0
13 10.62 -8.00 5.57 -8.00 -12.97 75.32 -18.51 110.70 0.3322 920.6 999999
14 0.61 -8.00 0.32 -8.00 -13.38 74.87 -18.97 111.44 0.3413 627.9 999999
15 0.00 4.56 0.00 2.41 -12.63 74.34 -19.50 108.93 0.3458 650.0 589.1
16 2.02 6.49 1.07 3.43 -13.50 74.10 -19.73 111.12 0.3535 -1135.9 -839.8
17 0.00 1.49 0.00 0.79 -14.44 73.42 -20.41 113.03 0.3686 533.0 511.8
18 0.00 2.11 0.00 1.13 -15.89 73.08 -20.76 116.32 0.3820 -900.0 -730.8
19 0.00 1.58 0.00 0.85 -15.67 73.07 -20.77 115.79 0.3808 -945.0 -814.7
20 0.00 9.74 0.00 5.18 -13.10 73.19 -20.65 109.34 0.3656 -845.0 -672.5
21 0.00 1.23 0.00 0.65 -12.47 73.18 -20.66 107.64 0.3630 -1007.0 -901.9
22 0.97 2.90 0.51 1.54 -11.77 73.14 -20.70 105.74 0.3611 785.4 650.8
23 0.00 1.93 0.00 1.03 -12.79 73.02 -20.82 108.40 0.3668 -1113.0 -928.4
24 0.00 1.05 0.00 0.57 -15.81 72.62 -21.22 115.70 0.3881 -671.0 -493.3
25 0.00 1.75 0.00 0.93 -12.52 72.88 -20.96 107.57 0.3679 280.0 208.9
26 0.00 0.70 0.00 0.38 -14.83 72.52 -21.31 113.24 0.3840 -824.0 -667.9
27 0.00 0.97 0.00 0.52 -15.85 72.24 -21.59 115.47 0.3938 -699.0 -596.1
28 1.32 270.39 0.70 145.73 -13.92 72.42 -21.42 110.87 0.3810 -1152.5 -433.3
29 0.00 0.61 0.00 0.33 -13.49 72.43 -21.41 109.81 0.3789 -847.0 -696.3
30 33.78 -28.00 18.16 -28.00 -14.01 71.78 -22.06 110.64 0.3911 -1308.6 999999
31 0.00 2.46 0.00 1.32 -13.07 71.74 -22.10 108.28 0.3876 -461.0 -478.5
32 0.00 1.75 0.00 0.94 -12.88 71.62 -22.21 107.74 0.3886 -895.0 -761.4
33 1.05 9.04 0.56 4.85 -12.10 71.63 -22.21 105.76 0.3857 -989.7 -687.4
34 9.48 -28.00 5.12 -28.00 -14.01 71.11 -22.73 110.18 0.4011 -1108.0 999999
35 17.28 -28.00 9.33 -28.00 -13.68 71.11 -22.73 109.37 0.3996 -1181.7 999999
36 2.63 -28.00 1.43 -28.00 -13.08 70.53 -23.30 107.58 0.4059 -889.8 999999


  • 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.