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

11944 716.20 3305.75 468.18 2177.19 -9.10 98.11 -40.89 99.87 0.6560 450.8 30.8


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SDO HMI 2014-01-04 20:00:24 UT

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

1 0.00 1.44 0.00 0.84 -12.64 107.95 -31.05 108.49 0.5328 -764.0 -561.1
2 0.00 1.19 0.00 0.70 -8.39 106.22 -32.78 100.13 0.5462 -562.0 -455.3
3 0.34 1447.17 0.20 884.46 -8.00 106.15 -32.85 99.41 0.5466 -431.8 372.7
4 0.00 1.78 0.00 1.06 -8.19 105.74 -33.26 99.69 0.5528 -309.0 -267.8
5 1.27 -3.00 0.76 -3.00 -7.95 105.69 -33.31 99.25 0.5532 -118.7 999999
6 0.00 1.10 0.00 0.66 -9.13 105.25 -33.75 101.25 0.5614 10.0 111.0
7 0.00 1.95 0.00 1.16 -6.13 105.17 -33.83 95.89 0.5587 -336.0 -142.3
8 1.70 -3.00 1.02 -3.00 -8.16 104.63 -34.37 99.41 0.5686 1508.4 999999
9 0.00 5.27 0.00 3.19 -5.02 103.73 -35.27 93.84 0.5787 -363.0 -216.7
10 339.46 -3.00 207.48 -3.00 -7.96 103.23 -35.77 98.84 0.5881 1459.9 999999
11 0.93 -3.00 0.57 -3.00 -6.48 103.18 -35.81 96.31 0.5872 947.5 999999
12 0.00 2.12 0.00 1.30 -4.32 103.04 -35.96 92.61 0.5884 -915.0 -679.7
13 0.68 -3.00 0.42 -3.00 -7.16 102.42 -36.58 97.39 0.5984 618.1 999999
14 2.38 -3.00 1.47 -3.00 -6.69 102.39 -36.61 96.59 0.5985 268.9 999999
15 3.23 -3.00 2.00 -3.00 -7.24 102.27 -36.73 97.51 0.6007 463.2 999999
16 0.00 1.10 0.00 0.68 -5.20 102.25 -36.75 94.10 0.5996 -806.0 -637.0
17 3.14 -3.00 1.95 -3.00 -6.55 102.03 -36.97 96.34 0.6034 343.1 999999
18 0.00 4.33 0.00 2.68 -5.34 102.05 -36.94 94.32 0.6024 -125.0 -143.1
19 1.53 -3.00 0.95 -3.00 -6.54 101.55 -37.45 96.27 0.6100 410.6 999999
20 0.00 2.63 0.00 1.65 -6.11 101.21 -37.79 95.54 0.6144 -91.0 -122.5
21 0.00 2.38 0.00 1.50 -6.75 100.85 -38.15 96.55 0.6197 -85.0 7.1
22 0.00 0.59 0.00 0.39 -15.20 99.47 -39.53 109.47 0.6538 632.0 553.3
23 0.00 2.89 0.00 1.82 -6.48 100.76 -38.23 96.11 0.6208 15.0 17.2
24 0.00 1.44 0.00 0.91 -6.37 100.35 -38.64 95.91 0.6262 -733.0 -614.2
25 0.00 0.42 0.00 0.27 -7.28 100.15 -38.85 97.35 0.6296 790.0 650.4
26 0.00 0.93 0.00 0.62 -15.38 98.63 -40.37 109.47 0.6647 557.0 426.0
27 3.91 7.22 2.50 4.61 -7.21 99.81 -39.18 97.20 0.6341 713.7 271.5
28 0.59 2.89 0.38 1.85 -8.66 99.65 -39.35 99.46 0.6378 746.9 567.4
29 0.42 31.76 0.27 20.41 -6.50 99.81 -39.19 96.08 0.6337 788.2 73.4
30 2.29 -29.00 1.47 -29.00 -6.37 99.63 -39.37 95.87 0.6361 592.1 999999
31 0.76 -29.00 0.49 -29.00 -6.93 99.57 -39.43 96.74 0.6371 470.2 999999
32 0.59 -29.00 0.38 -29.00 -6.61 99.57 -39.43 96.23 0.6370 721.7 999999
33 31.59 532.41 20.54 348.01 -10.62 98.90 -40.10 102.37 0.6505 1239.1 293.0
34 0.00 1.19 0.00 0.79 -15.15 98.00 -41.00 108.93 0.6718 611.0 453.9
35 2.04 7.64 1.32 4.93 -8.70 99.14 -39.86 99.45 0.6446 817.1 710.1
36 75.08 -33.00 49.06 -33.00 -11.24 98.64 -40.36 103.26 0.6549 1153.5 999999
37 0.34 1.27 0.22 0.82 -5.65 99.34 -39.65 94.72 0.6395 -620.8 -605.8
38 1.61 2.55 1.05 1.65 -8.71 98.82 -40.18 99.43 0.6488 719.9 583.3
39 0.00 0.93 0.00 0.61 -8.12 98.78 -40.22 98.51 0.6487 502.0 420.3
40 1.36 -33.00 0.89 -33.00 -10.24 98.44 -40.55 101.72 0.6558 690.9 999999
41 0.00 1.27 0.00 0.82 -5.99 98.97 -40.03 95.23 0.6447 635.0 484.7
42 0.93 -33.00 0.61 -33.00 -10.33 98.39 -40.61 101.84 0.6566 683.5 999999
43 1.87 -33.00 1.22 -33.00 -10.06 98.39 -40.61 101.43 0.6562 606.5 999999
44 0.00 0.68 0.00 0.44 -8.85 98.57 -40.43 99.61 0.6523 534.0 467.4
45 0.34 1.19 0.22 0.77 -6.42 98.61 -40.38 95.88 0.6496 362.0 234.9
46 0.00 0.85 0.00 0.55 -8.34 98.36 -40.64 98.80 0.6544 574.0 435.3
47 0.34 1.95 0.22 1.28 -8.44 98.03 -40.97 98.92 0.6588 573.2 513.9
48 0.85 163.06 0.56 108.36 -7.38 98.12 -40.88 97.31 0.6567 742.6 -258.0
49 0.00 0.76 0.00 0.50 -8.44 97.91 -41.09 98.90 0.6603 245.0 326.0
50 0.00 1.61 0.00 1.06 -8.17 97.91 -41.09 98.50 0.6602 488.0 294.3
51 0.51 1.61 0.33 1.05 -5.22 98.17 -40.82 94.02 0.6550 587.2 426.7
52 0.00 1.02 0.00 0.67 -5.58 98.14 -40.85 94.56 0.6554 323.0 260.2
53 0.51 1.70 0.33 1.11 -4.81 98.09 -40.91 93.38 0.6560 752.2 656.7
54 0.00 0.68 0.00 0.45 -9.66 97.30 -41.70 100.66 0.6697 414.0 368.5
55 0.00 1.10 0.00 0.73 -5.91 97.52 -41.48 95.04 0.6637 -355.0 -362.6
56 1.27 48.32 0.84 32.14 -5.37 97.37 -41.63 94.22 0.6655 703.1 -119.7
57 6.28 -48.00 4.17 -48.00 -6.63 97.21 -41.79 96.12 0.6680 -1079.6 999999
58 1.44 3.57 0.96 2.36 -4.75 97.34 -41.66 93.28 0.6658 793.4 616.4
59 0.00 1.10 0.00 0.75 -12.40 96.24 -42.76 104.48 0.6872 -703.0 -588.9
60 0.68 2.80 0.47 1.92 -13.67 95.83 -43.16 106.23 0.6946 641.8 480.8
61 5.52 -56.00 3.67 -56.00 -5.65 97.03 -41.97 94.63 0.6700 -630.5 999999
62 1.70 3.74 1.14 2.51 -9.04 96.62 -42.37 99.65 0.6775 755.9 509.6
63 2.97 -48.00 1.99 -48.00 -6.41 96.75 -42.24 95.75 0.6738 -861.2 999999
64 2.97 -48.00 1.99 -48.00 -6.73 96.72 -42.28 96.23 0.6744 -840.3 999999
65 0.00 0.93 0.00 0.63 -7.64 96.57 -42.43 97.58 0.6769 498.0 434.9
66 1.78 -48.00 1.19 -48.00 -6.26 96.69 -42.31 95.53 0.6746 -858.1 999999
67 0.00 2.89 0.00 1.95 -9.11 96.25 -42.75 99.71 0.6823 572.0 447.1
68 0.59 -48.00 0.40 -48.00 -6.25 96.53 -42.47 95.51 0.6767 -733.3 999999
69 2.04 -56.00 1.37 -56.00 -5.69 96.54 -42.45 94.68 0.6763 573.8 999999
70 2.12 -48.00 1.43 -48.00 -7.04 96.36 -42.64 96.67 0.6792 805.8 999999
71 7.47 -48.00 5.03 -48.00 -6.81 96.35 -42.65 96.32 0.6792 659.6 999999
72 0.00 1.19 0.00 0.81 -9.46 95.99 -43.01 100.18 0.6860 482.0 421.1
73 0.00 2.38 0.00 1.62 -10.70 95.74 -43.26 101.95 0.6906 595.0 421.5
74 0.93 -48.00 0.63 -48.00 -7.21 96.14 -42.86 96.90 0.6821 634.4 999999
75 0.00 1.36 0.00 0.93 -10.45 95.53 -43.46 101.56 0.6928 639.0 490.9
76 3.65 -48.00 2.47 -48.00 -6.76 96.03 -42.97 96.24 0.6833 -324.6 999999
77 0.00 1.53 0.00 1.04 -9.45 95.62 -43.38 100.11 0.6905 557.0 425.5
78 0.00 1.19 0.00 0.81 -8.05 95.74 -43.25 98.11 0.6877 311.0 165.4
79 0.00 0.59 0.00 0.40 -3.78 96.05 -42.95 91.85 0.6826 481.0 434.7
80 0.00 19.62 0.00 13.36 -7.58 95.64 -43.35 97.40 0.6886 -100.0 -126.6
81 2.04 4.93 1.40 3.38 -8.51 95.35 -43.65 98.73 0.6930 -616.2 -359.6
82 0.00 0.76 0.00 0.53 -9.80 94.94 -44.06 100.54 0.6994 382.0 294.7
83 1.53 14.10 1.06 9.79 -10.48 94.74 -44.26 101.48 0.7027 499.2 7.1
84 0.93 -83.00 0.65 -83.00 -10.16 94.80 -44.20 101.02 0.7015 397.4 999999
85 0.00 0.51 0.00 0.36 -11.06 94.42 -44.58 102.26 0.7073 421.0 374.5
86 0.00 1.95 0.00 1.35 -7.60 94.85 -44.14 97.38 0.6985 -395.0 -360.7
87 0.00 1.44 0.00 1.01 -11.26 94.21 -44.79 102.51 0.7101 222.0 170.7
88 2.29 101.83 1.59 71.41 -7.98 94.55 -44.44 97.89 0.7024 -799.9 -548.6
89 15.80 67.52 10.93 46.64 -6.97 94.64 -44.35 96.46 0.7007 -929.9 -462.9
90 1.87 -88.00 1.30 -88.00 -8.76 94.23 -44.77 98.98 0.7070 -1039.5 999999
91 0.00 1.19 0.00 0.82 -4.60 94.55 -44.45 93.07 0.7014 -764.0 -685.4
92 0.00 1.61 0.00 1.14 -9.58 93.84 -45.16 100.09 0.7125 -643.0 -443.8
93 0.42 14.01 0.30 9.86 -10.11 93.66 -45.34 100.81 0.7152 -880.8 -605.0
94 0.68 92.66 0.48 65.56 -7.39 94.00 -44.99 97.02 0.7088 -871.2 -207.2
95 8.58 16.82 5.99 11.72 -5.65 94.12 -44.88 94.56 0.7067 -929.6 -598.8
96 15.46 -88.00 10.90 -88.00 -8.65 93.65 -45.35 98.77 0.7140 -912.3 999999
97 0.00 2.97 0.00 2.12 -10.95 93.24 -45.76 101.93 0.7212 -854.0 -781.3
98 3.99 -94.00 2.80 -94.00 -7.29 93.76 -45.23 96.86 0.7117 -834.8 999999
99 0.85 -94.00 0.60 -94.00 -7.58 93.64 -45.36 97.27 0.7134 -902.3 999999
100 0.00 1.02 0.00 0.73 -10.62 93.09 -45.91 101.45 0.7226 -689.0 -696.7
101 0.00 0.59 0.00 0.42 -8.23 93.46 -45.54 98.16 0.7159 -573.0 -483.7
102 1.02 195.84 0.73 143.28 -11.53 92.81 -46.18 102.67 0.7270 -637.0 -605.1
103 9.26 -88.00 6.57 -88.00 -8.90 93.27 -45.73 99.08 0.7188 -843.0 999999
104 19.53 -94.00 13.78 -94.00 -6.92 93.51 -45.48 96.34 0.7146 -728.2 999999
105 0.00 1.27 0.00 0.91 -9.63 93.06 -45.94 100.08 0.7219 -716.0 -632.9
106 0.00 2.29 0.00 1.62 -5.89 93.55 -45.45 94.88 0.7138 -689.0 -569.5
107 7.39 -94.00 5.24 -94.00 -7.62 93.25 -45.75 97.30 0.7181 -607.7 999999
108 2.04 -88.00 1.45 -88.00 -8.45 93.13 -45.87 98.44 0.7201 -670.2 999999
109 0.00 1.44 0.00 1.06 -13.72 92.03 -46.97 105.51 0.7393 -649.0 -601.1
110 0.85 -94.00 0.60 -94.00 -6.15 93.39 -45.61 95.24 0.7158 -584.1 999999
111 0.00 1.02 0.00 0.73 -10.13 92.71 -46.29 100.72 0.7266 246.0 207.7
112 0.00 0.68 0.00 0.50 -13.65 91.82 -47.18 105.38 0.7416 -357.0 -312.1
113 3.57 5.78 2.66 4.31 -15.20 91.34 -47.66 107.34 0.7497 -756.9 -583.0
114 2.72 251.47 2.01 190.22 -13.85 91.63 -47.37 105.61 0.7440 338.2 -477.4
115 0.00 1.70 0.00 1.24 -12.40 92.00 -46.99 103.72 0.7376 -565.0 -513.0
116 0.00 4.33 0.00 3.22 -14.69 91.35 -47.65 106.67 0.7486 -246.0 -68.5
117 0.00 1.44 0.00 1.06 -13.34 91.63 -47.37 104.93 0.7432 286.0 155.4
118 0.00 1.10 0.00 0.81 -12.57 91.83 -47.17 103.92 0.7398 -635.0 -578.3
119 0.00 1.27 0.00 0.95 -14.47 91.28 -47.72 106.37 0.7490 399.0 284.5
120 3.06 -102.00 2.23 -102.00 -11.20 92.05 -46.95 102.11 0.7355 -1227.7 999999
121 0.00 0.76 0.00 0.55 -9.75 92.25 -46.74 100.15 0.7316 -514.0 -553.6
122 0.00 1.10 0.00 0.80 -10.01 92.16 -46.84 100.50 0.7329 -717.0 -609.5
123 3.99 -102.00 2.92 -102.00 -11.34 91.84 -47.15 102.27 0.7380 -1045.0 999999
124 0.00 1.02 0.00 0.76 -14.46 90.92 -48.08 106.28 0.7530 -340.0 -296.8
125 0.00 1.02 0.00 0.77 -14.99 90.62 -48.38 106.92 0.7571 -459.0 -384.4
126 0.51 3.31 0.37 2.41 -9.08 91.85 -47.15 99.20 0.7357 -853.5 -706.6
127 2.97 -102.00 2.20 -102.00 -11.68 91.28 -47.72 102.64 0.7449 -826.9 999999
128 0.85 -102.00 0.63 -102.00 -11.44 91.33 -47.67 102.33 0.7440 -938.9 999999
129 2.04 16.65 1.49 12.20 -9.49 91.69 -47.31 99.74 0.7380 -880.2 -594.7
130 0.00 1.10 0.00 0.80 -7.86 91.96 -47.04 97.55 0.7336 -170.0 -230.5
131 1.02 -129.00 0.75 -129.00 -9.18 91.61 -47.39 99.32 0.7386 -875.9 999999
132 0.00 2.29 0.00 1.67 -8.15 91.74 -47.26 97.93 0.7364 -594.0 -467.3
133 0.76 -129.00 0.56 -129.00 -9.06 91.50 -47.50 99.14 0.7398 -653.9 999999
134 0.00 0.93 0.00 0.68 -8.38 91.61 -47.39 98.23 0.7380 -711.0 -593.9
135 0.00 0.25 0.00 0.19 -8.88 91.44 -47.56 98.89 0.7403 -477.0 -473.7
136 0.00 1.95 0.00 1.44 -9.74 91.28 -47.71 100.04 0.7428 -799.0 -753.2
137 1.19 -114.00 0.90 -114.00 -13.94 90.19 -48.81 105.47 0.7601 -776.1 999999
138 0.59 -102.00 0.44 -102.00 -10.73 90.95 -48.05 101.34 0.7476 -909.9 999999
139 0.00 5.78 0.00 4.34 -12.33 90.58 -48.42 103.42 0.7536 -494.0 -497.2
140 0.00 1.10 0.00 0.83 -12.10 90.63 -48.36 103.11 0.7527 -682.0 -601.0
141 0.59 -102.00 0.44 -102.00 -9.85 91.08 -47.91 100.16 0.7452 -718.9 999999
142 0.00 1.36 0.00 1.00 -7.87 91.43 -47.57 97.53 0.7399 -550.0 -446.2
143 0.00 2.97 0.00 2.20 -9.58 91.13 -47.86 99.81 0.7444 -574.0 -537.9
144 0.93 -102.00 0.69 -102.00 -10.31 90.85 -48.14 100.77 0.7483 -757.0 999999
145 0.93 -102.00 0.69 -102.00 -10.04 90.86 -48.13 100.41 0.7479 -738.5 999999
146 30.83 -114.00 23.44 -114.00 -13.42 90.01 -48.98 104.76 0.7613 -957.2 999999
147 0.00 0.85 0.00 0.62 -7.21 91.30 -47.69 96.63 0.7410 -536.0 -496.8
148 4.25 -114.00 3.20 -114.00 -11.93 90.35 -48.64 102.86 0.7556 -943.9 999999
149 0.68 -102.00 0.51 -102.00 -10.10 90.72 -48.28 100.47 0.7496 -704.1 999999
150 2.46 -114.00 1.85 -114.00 -11.63 90.33 -48.66 102.46 0.7555 -907.9 999999
151 1.70 -114.00 1.29 -114.00 -12.31 90.03 -48.97 103.31 0.7597 -890.2 999999
152 0.00 3.06 0.00 2.28 -9.71 90.61 -48.38 99.93 0.7505 -532.0 -456.0
153 7.30 18.60 5.49 14.00 -10.74 90.31 -48.69 101.27 0.7548 -824.3 -569.7
154 4.16 -114.00 3.16 -114.00 -12.10 89.99 -49.01 103.03 0.7598 -779.0 999999
155 0.00 3.99 0.00 2.96 -7.64 90.88 -48.11 97.18 0.7461 -312.0 -450.3
156 0.00 0.68 0.00 0.51 -9.28 90.51 -48.48 99.36 0.7513 -419.0 -428.4
157 0.76 3.57 0.57 2.65 -8.07 90.68 -48.32 97.76 0.7486 -559.0 -485.5
158 4.93 -114.00 3.74 -114.00 -11.53 89.95 -49.05 102.27 0.7597 -787.9 999999
159 0.00 1.27 0.00 0.97 -12.50 89.70 -49.29 103.52 0.7635 -545.0 -499.4
160 0.00 1.02 0.00 0.76 -8.28 90.60 -48.39 98.02 0.7496 -488.0 -419.1
161 2.04 -114.00 1.57 -114.00 -13.07 89.50 -49.49 104.22 0.7664 -381.1 999999
162 1.10 -153.00 0.83 -153.00 -10.46 90.14 -48.86 100.89 0.7565 -572.5 999999
163 0.00 3.65 0.00 2.72 -7.21 90.63 -48.36 96.60 0.7488 -388.0 -338.9
164 0.00 0.85 0.00 0.64 -9.10 90.32 -48.67 99.10 0.7533 -500.0 -334.2
165 0.00 2.29 0.00 1.73 -9.71 90.16 -48.84 99.90 0.7556 -591.0 -489.6
166 0.00 3.23 0.00 2.42 -8.86 90.28 -48.72 98.77 0.7537 -490.0 -416.4
167 0.00 0.68 0.00 0.51 -7.91 90.44 -48.56 97.53 0.7513 -196.0 -180.8
168 0.00 0.93 0.00 0.70 -9.36 90.18 -48.81 99.43 0.7551 -411.0 -362.1
169 0.00 0.59 0.00 0.46 -12.61 89.39 -49.60 103.62 0.7670 -333.0 -320.1
170 0.00 0.76 0.00 0.57 -9.21 90.17 -48.83 99.23 0.7552 -503.0 -420.0
171 0.76 -114.00 0.58 -114.00 -11.22 89.70 -49.30 101.83 0.7622 -656.3 999999
172 0.00 0.93 0.00 0.71 -10.32 89.80 -49.19 100.67 0.7601 -545.0 -467.9
173 0.00 1.19 0.00 0.91 -10.83 89.65 -49.35 101.32 0.7623 -522.0 -411.1
174 0.93 3.57 0.71 2.73 -11.03 89.51 -49.49 101.57 0.7641 -549.4 -420.9
175 2.46 3.91 1.88 2.98 -10.49 89.54 -49.46 100.87 0.7632 -556.6 -393.2
176 0.00 0.93 0.00 0.71 -9.10 89.82 -49.18 99.07 0.7590 -312.0 -238.0
177 2.55 6.96 1.94 5.29 -9.51 89.60 -49.39 99.59 0.7617 -432.8 -434.9
178 1.27 15.20 0.96 11.51 -7.95 89.89 -49.11 97.54 0.7576 304.7 -347.5
179 0.00 2.21 0.00 1.70 -11.76 89.10 -49.90 102.47 0.7693 -424.0 -351.8
180 0.00 3.48 0.00 2.68 -11.25 89.13 -49.87 101.81 0.7684 -430.0 -405.7
181 1.53 2.63 1.17 2.02 -10.18 89.32 -49.67 100.44 0.7653 -473.7 -338.5
182 0.00 1.53 0.00 1.17 -9.77 89.37 -49.63 99.90 0.7645 -292.0 -243.4
183 0.00 10.02 0.00 7.67 -9.11 89.31 -49.69 99.04 0.7647 227.0 73.4
184 0.59 3.91 0.46 3.01 -11.00 88.86 -50.14 101.46 0.7711 -361.7 -289.7
185 0.00 0.59 0.00 0.45 -8.13 89.30 -49.69 97.75 0.7642 -382.0 -361.7
186 0.00 0.59 0.00 0.46 -9.89 88.87 -50.13 100.03 0.7701 -182.0 -173.7
187 2.89 23.95 2.24 18.65 -10.18 88.67 -50.33 100.38 0.7725 -491.8 40.8
188 0.00 1.44 0.00 1.10 -5.35 89.47 -49.53 94.10 0.7617 -553.0 -468.8
189 0.00 1.02 0.00 0.78 -8.23 88.96 -50.04 97.87 0.7681 -167.0 -141.4
190 0.00 2.29 0.00 1.83 -13.10 87.63 -51.37 104.01 0.7864 -405.0 -329.5
191 0.00 1.44 0.00 1.14 -11.50 88.07 -50.93 102.02 0.7801 -542.0 -414.1
192 0.76 1.53 0.61 1.21 -11.61 87.76 -51.24 102.12 0.7836 -407.4 -295.8


  • 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.