SDO HMI 2014-05-13 17:00:37 UT
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| group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
| 135.06 | 737.66 | 70.16 | 381.96 | -14.41 | 228.31 | -11.51 | 137.87 | 0.2836 | 209.2 | 96.6 | |
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| spot | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
| 0.00 | 1.08 | 0.00 | 0.55 | -7.24 | 252.58 | 12.76 | 250.43 | 0.2336 | 761.0 | 587.8 | |
| 0.00 | 1.88 | 0.00 | 0.95 | -8.56 | 247.02 | 7.20 | 231.12 | 0.1600 | 693.0 | 680.5 | |
| 0.00 | 0.99 | 0.00 | 0.50 | -12.73 | 243.03 | 3.21 | 197.66 | 0.1811 | 841.0 | 689.5 | |
| 0.00 | 1.17 | 0.00 | 0.59 | -13.62 | 242.36 | 2.54 | 192.95 | 0.1928 | 734.0 | 545.8 | |
| 0.00 | 1.08 | 0.00 | 0.54 | -13.56 | 241.42 | 1.60 | 188.31 | 0.1888 | 748.0 | 670.9 | |
| 0.00 | 2.51 | 0.00 | 1.26 | -12.45 | 240.42 | 0.60 | 183.53 | 0.1680 | 871.0 | 643.1 | |
| 0.00 | 1.88 | 0.00 | 0.95 | -14.73 | 240.02 | 0.20 | 180.94 | 0.2070 | 752.0 | 606.3 | |
| 0.00 | 1.43 | 0.00 | 0.73 | -14.30 | 239.61 | -0.21 | 178.99 | 0.1996 | 726.0 | 660.8 | |
| 0.00 | 0.81 | 0.00 | 0.41 | -14.48 | 239.11 | -0.71 | 176.61 | 0.2031 | 708.0 | 492.3 | |
| 0.00 | 1.52 | 0.00 | 0.79 | -19.83 | 238.67 | -1.15 | 176.29 | 0.2941 | 919.0 | 662.4 | |
| 0.00 | 1.26 | 0.00 | 0.64 | -14.76 | 238.42 | -1.40 | 173.49 | 0.2088 | 574.0 | 497.0 | |
| 0.00 | 2.33 | 0.00 | 1.16 | -8.02 | 238.43 | -1.39 | 165.13 | 0.0938 | 861.0 | 684.7 | |
| 0.00 | 0.99 | 0.00 | 0.49 | -7.93 | 237.94 | -1.88 | 159.92 | 0.0949 | 946.0 | 715.0 | |
| 0.00 | 1.88 | 0.00 | 0.94 | -11.37 | 236.99 | -2.83 | 161.95 | 0.1568 | 793.0 | 645.0 | |
| 0.00 | 2.60 | 0.00 | 1.33 | -16.53 | 236.80 | -3.02 | 167.94 | 0.2431 | 171.0 | 207.5 | |
| 0.00 | 1.97 | 0.00 | 0.99 | -11.98 | 236.74 | -3.08 | 161.69 | 0.1682 | 997.0 | 744.0 | |
| 0.00 | 1.17 | 0.00 | 0.58 | -9.87 | 236.39 | -3.43 | 154.32 | 0.1365 | 772.0 | 577.4 | |
| 0.00 | 1.26 | 0.00 | 0.63 | -13.15 | 236.19 | -3.63 | 161.01 | 0.1902 | 946.0 | 723.2 | |
| 0.00 | 1.26 | 0.00 | 0.63 | -12.84 | 235.82 | -3.99 | 158.64 | 0.1874 | 942.0 | 785.1 | |
| 0.00 | 1.52 | 0.00 | 0.76 | -9.96 | 235.81 | -4.01 | 150.94 | 0.1425 | 716.0 | 635.8 | |
| 0.00 | 1.43 | 0.00 | 0.73 | -13.30 | 235.26 | -4.56 | 156.91 | 0.1983 | 773.0 | 696.6 | |
| 0.00 | 1.35 | 0.00 | 0.68 | -10.69 | 235.06 | -4.76 | 149.16 | 0.1599 | 966.0 | 768.8 | |
| 0.00 | 9.95 | 0.00 | 4.99 | -9.96 | 235.07 | -4.75 | 146.66 | 0.1491 | 785.0 | 750.8 | |
| 0.00 | 4.39 | 0.00 | 2.21 | -10.54 | 234.84 | -4.98 | 147.53 | 0.1596 | 896.0 | 880.2 | |
| 0.00 | 1.61 | 0.00 | 0.82 | -13.57 | 234.75 | -5.07 | 155.25 | 0.2062 | 887.0 | 675.6 | |
| 0.00 | 1.52 | 0.00 | 0.76 | -9.83 | 234.79 | -5.03 | 144.69 | 0.1501 | 765.0 | 638.3 | |
| 0.00 | 1.08 | 0.00 | 0.55 | -14.22 | 234.67 | -5.15 | 156.23 | 0.2168 | 799.0 | 671.7 | |
| 0.00 | 2.42 | 0.00 | 1.21 | -5.18 | 234.73 | -5.09 | 114.92 | 0.0979 | 938.0 | 775.1 | |
| 0.00 | 0.99 | 0.00 | 0.50 | -14.34 | 234.51 | -5.31 | 155.82 | 0.2198 | 859.0 | 703.9 | |
| 0.00 | 0.99 | 0.00 | 0.49 | -6.73 | 234.56 | -5.26 | 126.76 | 0.1142 | 1035.0 | 966.0 | |
| 1.26 | 2.96 | 0.63 | 1.49 | -11.45 | 234.45 | -5.37 | 148.55 | 0.1765 | 1170.4 | 903.8 | |
| 0.00 | 0.90 | 0.00 | 0.46 | -15.33 | 234.36 | -5.46 | 157.03 | 0.2362 | 800.0 | 607.2 | |
| 0.00 | 1.70 | 0.00 | 0.87 | -14.56 | 234.35 | -5.47 | 155.59 | 0.2242 | 1107.0 | 944.4 | |
| 0.00 | 1.35 | 0.00 | 0.67 | -4.94 | 234.43 | -5.39 | 111.47 | 0.1011 | 1109.0 | 874.4 | |
| 0.00 | 3.14 | 0.00 | 1.58 | -10.26 | 234.29 | -5.53 | 143.75 | 0.1611 | 931.0 | 774.7 | |
| 0.00 | 1.08 | 0.00 | 0.55 | -15.39 | 234.07 | -5.75 | 156.08 | 0.2391 | 797.0 | 686.4 | |
| 0.00 | 1.26 | 0.00 | 0.63 | -6.00 | 234.11 | -5.71 | 119.21 | 0.1139 | 884.0 | 690.8 | |
| 0.00 | 2.51 | 0.00 | 1.28 | -14.31 | 233.95 | -5.87 | 153.52 | 0.2234 | 949.0 | 572.2 | |
| 0.00 | 1.52 | 0.00 | 0.79 | -19.62 | 233.64 | -6.18 | 160.67 | 0.3075 | 795.0 | 549.2 | |
| 0.00 | 1.35 | 0.00 | 0.68 | -10.41 | 233.79 | -6.03 | 141.95 | 0.1683 | 827.0 | 670.0 | |
| 0.00 | 1.26 | 0.00 | 0.64 | -15.67 | 233.50 | -6.32 | 154.50 | 0.2474 | 905.0 | 688.6 | |
| 0.00 | 9.60 | 0.00 | 4.83 | -10.68 | 233.38 | -6.44 | 141.13 | 0.1763 | 619.0 | 802.8 | |
| 0.00 | 1.08 | 0.00 | 0.54 | -5.06 | 233.45 | -6.37 | 109.39 | 0.1177 | 746.0 | 616.7 | |
| 0.00 | 1.17 | 0.00 | 0.59 | -14.03 | 233.11 | -6.71 | 149.73 | 0.2260 | 886.0 | 720.6 | |
| 0.00 | 1.26 | 0.00 | 0.63 | -10.52 | 231.93 | -7.89 | 134.79 | 0.1911 | -850.0 | -716.9 | |
| 0.00 | 1.61 | 0.00 | 0.81 | -9.69 | 231.67 | -8.15 | 130.59 | 0.1848 | 775.0 | 579.6 | |
| 0.00 | 1.79 | 0.00 | 0.91 | -10.33 | 231.56 | -8.26 | 132.79 | 0.1935 | -967.0 | -836.9 | |
| 0.00 | 2.15 | 0.00 | 1.09 | -10.63 | 231.43 | -8.39 | 133.50 | 0.1986 | -975.0 | -788.1 | |
| 0.00 | 1.97 | 0.00 | 1.00 | -10.36 | 231.31 | -8.51 | 132.06 | 0.1969 | -897.0 | -778.8 | |
| 0.00 | 2.69 | 0.00 | 1.36 | -10.57 | 231.12 | -8.70 | 132.24 | 0.2018 | -867.0 | -771.0 | |
| 0.00 | 1.08 | 0.00 | 0.54 | -10.42 | 230.78 | -9.04 | 130.59 | 0.2044 | -879.0 | -708.1 | |
| 21.16 | 339.62 | 10.84 | 174.30 | -14.38 | 230.48 | -9.34 | 141.90 | 0.2560 | 1357.4 | 410.6 | |
| 0.00 | 1.26 | 0.00 | 0.64 | -12.13 | 230.35 | -9.47 | 135.19 | 0.2293 | -751.0 | -568.1 | |
| 20.09 | -52.00 | 10.29 | -52.00 | -14.09 | 230.11 | -9.71 | 140.12 | 0.2563 | 1477.3 | 999999 | |
| 7.17 | -52.00 | 3.68 | -52.00 | -14.40 | 230.06 | -9.76 | 140.78 | 0.2607 | 1235.0 | 999999 | |
| 5.83 | -52.00 | 2.99 | -52.00 | -14.25 | 229.78 | -10.03 | 139.60 | 0.2617 | 1074.9 | 999999 | |
| 0.36 | 2.51 | 0.18 | 1.28 | -12.06 | 229.63 | -10.19 | 132.92 | 0.2374 | -1069.0 | -800.0 | |
| 1.17 | -52.00 | 0.60 | -52.00 | -14.67 | 229.45 | -10.37 | 139.76 | 0.2708 | 941.2 | 999999 | |
| 2.15 | -52.00 | 1.11 | -52.00 | -14.55 | 229.36 | -10.46 | 139.21 | 0.2703 | 1130.1 | 999999 | |
| 0.72 | -52.00 | 0.37 | -52.00 | -14.77 | 229.35 | -10.47 | 139.72 | 0.2731 | 906.1 | 999999 | |
| 11.39 | -52.00 | 5.86 | -52.00 | -14.49 | 229.07 | -10.75 | 138.31 | 0.2726 | 1126.4 | 999999 | |
| 2.15 | -52.00 | 1.11 | -52.00 | -14.61 | 228.81 | -11.01 | 137.94 | 0.2770 | 926.7 | 999999 | |
| 0.00 | 2.42 | 0.00 | 1.25 | -14.27 | 228.70 | -11.12 | 136.79 | 0.2742 | 702.0 | 601.8 | |
| 0.00 | 1.61 | 0.00 | 0.82 | -11.68 | 228.60 | -11.22 | 129.05 | 0.2464 | -981.0 | -803.7 | |
| 0.00 | 2.69 | 0.00 | 1.38 | -11.86 | 228.56 | -11.26 | 129.54 | 0.2488 | -771.0 | -762.8 | |
| 2.06 | -52.00 | 1.06 | -52.00 | -14.29 | 228.38 | -11.44 | 136.07 | 0.2782 | 571.4 | 999999 | |
| 0.00 | 1.43 | 0.00 | 0.74 | -15.44 | 228.19 | -11.63 | 138.43 | 0.2941 | -919.0 | -652.1 | |
| 1.26 | 2.42 | 0.65 | 1.25 | -13.77 | 228.25 | -11.57 | 134.36 | 0.2736 | 888.1 | 624.7 | |
| 0.00 | 1.08 | 0.00 | 0.55 | -13.43 | 228.24 | -11.58 | 133.40 | 0.2700 | 816.0 | 718.7 | |
| 0.00 | 0.90 | 0.00 | 0.46 | -14.01 | 228.17 | -11.64 | 134.83 | 0.2774 | 630.0 | 439.5 | |
| 1.88 | 5.65 | 0.97 | 2.92 | -14.75 | 228.10 | -11.72 | 136.56 | 0.2869 | 859.5 | 332.1 | |
| 0.00 | 2.24 | 0.00 | 1.16 | -14.23 | 228.13 | -11.69 | 135.30 | 0.2804 | 675.0 | 357.9 | |
| 0.00 | 1.52 | 0.00 | 0.79 | -13.58 | 228.01 | -11.81 | 133.27 | 0.2745 | 743.0 | 597.2 | |
| 0.00 | 2.15 | 0.00 | 1.11 | -14.94 | 227.80 | -12.02 | 136.31 | 0.2925 | 744.0 | 532.9 | |
| 0.00 | 2.24 | 0.00 | 1.15 | -11.37 | 227.99 | -11.83 | 126.59 | 0.2515 | -890.0 | -715.2 | |
| 0.00 | 1.35 | 0.00 | 0.70 | -14.63 | 227.79 | -12.03 | 135.51 | 0.2890 | 456.0 | 239.7 | |
| 0.00 | 1.08 | 0.00 | 0.55 | -12.16 | 227.38 | -12.44 | 127.74 | 0.2675 | -988.0 | -751.1 | |
| 0.00 | 2.33 | 0.00 | 1.20 | -12.77 | 227.28 | -12.53 | 129.35 | 0.2749 | -846.0 | -634.1 | |
| 0.00 | 0.99 | 0.00 | 0.51 | -12.40 | 227.11 | -12.71 | 127.89 | 0.2734 | -702.0 | -572.8 | |
| 0.00 | 0.45 | 0.00 | 0.23 | -12.09 | 227.06 | -12.75 | 126.87 | 0.2711 | -831.0 | -717.2 | |
| 0.00 | 1.43 | 0.00 | 0.74 | -12.85 | 226.67 | -13.14 | 128.31 | 0.2838 | -1023.0 | -767.6 | |
| 0.00 | 0.90 | 0.00 | 0.46 | -13.28 | 226.52 | -13.30 | 129.20 | 0.2901 | 793.0 | 542.9 | |
| 0.00 | 1.26 | 0.00 | 0.65 | -14.76 | 226.37 | -13.45 | 132.75 | 0.3076 | -1049.0 | -786.4 | |
| 0.00 | 0.99 | 0.00 | 0.51 | -13.25 | 226.40 | -13.42 | 128.85 | 0.2914 | 792.0 | 613.9 | |
| 0.00 | 2.15 | 0.00 | 1.11 | -12.42 | 226.35 | -13.47 | 126.40 | 0.2839 | -1016.0 | -823.2 | |
| 0.00 | 2.24 | 0.00 | 1.16 | -13.59 | 226.15 | -13.67 | 129.28 | 0.2980 | -428.0 | -371.0 | |
| 0.00 | 1.97 | 0.00 | 1.03 | -15.50 | 225.93 | -13.89 | 133.64 | 0.3210 | -859.0 | -723.4 | |
| 0.00 | 1.17 | 0.00 | 0.61 | -15.07 | 225.96 | -13.86 | 132.67 | 0.3159 | -886.0 | -605.8 | |
| 0.00 | 1.79 | 0.00 | 0.98 | -23.50 | 224.69 | -15.13 | 145.95 | 0.4294 | 926.0 | 702.8 | |
| 0.99 | 33.36 | 0.51 | 17.42 | -14.32 | 225.50 | -14.32 | 129.91 | 0.3139 | -912.5 | -628.9 | |
| 1.43 | 42.87 | 0.75 | 22.50 | -16.15 | 225.33 | -14.49 | 133.95 | 0.3352 | -922.1 | -552.6 | |
| 3.05 | 32.29 | 1.59 | 16.77 | -13.27 | 225.43 | -14.39 | 127.04 | 0.3043 | -1095.1 | -550.8 | |
| 0.00 | 0.90 | 0.00 | 0.49 | -23.66 | 224.49 | -15.32 | 145.86 | 0.4331 | 704.0 | 589.2 | |
| 2.24 | -90.00 | 1.17 | -90.00 | -14.44 | 225.33 | -14.49 | 129.89 | 0.3173 | -1135.8 | 999999 | |
| 2.06 | -91.00 | 1.08 | -91.00 | -15.99 | 225.15 | -14.67 | 133.25 | 0.3357 | -960.7 | 999999 | |
| 1.70 | -92.00 | 0.89 | -92.00 | -13.45 | 225.29 | -14.53 | 127.28 | 0.3079 | -1094.1 | 999999 | |
| 7.53 | -90.00 | 3.94 | -90.00 | -14.31 | 225.01 | -14.81 | 128.99 | 0.3200 | -1184.5 | 999999 | |
| 0.00 | 0.90 | 0.00 | 0.47 | -15.33 | 224.81 | -15.01 | 131.10 | 0.3329 | -890.0 | -689.5 | |
| 0.00 | 1.61 | 0.00 | 0.84 | -12.53 | 224.97 | -14.85 | 124.16 | 0.3038 | -1075.0 | -919.8 | |
| 0.00 | 3.77 | 0.00 | 1.98 | -15.92 | 224.57 | -15.25 | 132.02 | 0.3420 | -853.0 | -726.1 | |
| 0.00 | 10.31 | 0.00 | 5.39 | -13.97 | 224.68 | -15.14 | 127.52 | 0.3210 | -222.0 | -752.9 | |
| 0.00 | 2.33 | 0.00 | 1.23 | -15.61 | 224.49 | -15.33 | 131.18 | 0.3397 | -914.0 | -827.0 | |
| 0.00 | 3.41 | 0.00 | 1.80 | -16.51 | 224.39 | -15.43 | 133.01 | 0.3504 | -799.0 | -603.8 | |
| 3.32 | 7.35 | 1.74 | 3.86 | -14.74 | 224.49 | -15.32 | 129.12 | 0.3309 | -1110.2 | -813.9 | |
| 0.00 | 1.08 | 0.00 | 0.57 | -15.95 | 224.34 | -15.48 | 131.67 | 0.3451 | -665.0 | -564.7 | |
| 0.00 | 1.43 | 0.00 | 0.76 | -15.57 | 224.27 | -15.55 | 130.70 | 0.3421 | -965.0 | -791.7 | |
| 0.00 | 1.43 | 0.00 | 0.76 | -16.13 | 224.19 | -15.63 | 131.83 | 0.3488 | -796.0 | -709.6 | |
| 0.00 | 0.99 | 0.00 | 0.53 | -18.89 | 223.87 | -15.95 | 136.94 | 0.3823 | -728.0 | -563.8 | |
| 0.00 | 1.35 | 0.00 | 0.71 | -15.94 | 223.94 | -15.88 | 130.98 | 0.3499 | -672.0 | -547.1 | |
| 0.54 | 3.23 | 0.28 | 1.70 | -15.23 | 223.90 | -15.92 | 129.27 | 0.3432 | -1018.0 | -862.6 | |
| 12.47 | 16.14 | 6.59 | 8.54 | -15.53 | 223.52 | -16.30 | 129.33 | 0.3511 | -1073.3 | -708.0 | |
| 0.00 | 2.24 | 0.00 | 1.18 | -14.82 | 223.51 | -16.31 | 127.65 | 0.3443 | -801.0 | -708.2 | |
| 0.00 | 1.52 | 0.00 | 0.81 | -15.00 | 223.37 | -16.45 | 127.85 | 0.3480 | -1001.0 | -908.8 | |
| 0.00 | 1.79 | 0.00 | 0.95 | -14.38 | 223.29 | -16.53 | 126.24 | 0.3433 | -1186.0 | -1007.8 | |
| 0.00 | 1.52 | 0.00 | 0.81 | -15.00 | 223.14 | -16.68 | 127.48 | 0.3509 | -816.0 | -716.9 | |
| 0.00 | 2.15 | 0.00 | 1.14 | -15.37 | 223.07 | -16.75 | 128.24 | 0.3552 | -687.0 | -498.2 | |
| 0.00 | 1.79 | 0.00 | 0.95 | -14.69 | 223.13 | -16.69 | 126.73 | 0.3481 | -841.0 | -673.7 | |
| 0.00 | 0.90 | 0.00 | 0.47 | -14.44 | 223.08 | -16.73 | 126.07 | 0.3465 | -775.0 | -734.8 | |
| 0.00 | 1.79 | 0.00 | 0.95 | -14.81 | 223.02 | -16.80 | 126.86 | 0.3507 | -712.0 | -645.2 | |
| 0.00 | 1.26 | 0.00 | 0.66 | -14.22 | 223.04 | -16.78 | 125.46 | 0.3451 | -878.0 | -677.1 | |
| 20.63 | 45.20 | 11.04 | 24.17 | -17.27 | 222.64 | -17.18 | 131.68 | 0.3793 | 1131.9 | 506.4 | |
| 0.45 | 2.69 | 0.24 | 1.45 | -18.87 | 222.47 | -17.35 | 134.59 | 0.3979 | -1050.8 | -886.7 | |
| 0.00 | 1.88 | 0.00 | 1.00 | -14.25 | 222.67 | -17.14 | 124.98 | 0.3502 | -795.0 | -608.3 | |
| 0.00 | 2.15 | 0.00 | 1.14 | -15.33 | 222.52 | -17.30 | 127.29 | 0.3620 | -769.0 | -642.2 | |
| 0.00 | 2.15 | 0.00 | 1.16 | -16.01 | 220.47 | -19.35 | 125.89 | 0.3949 | -868.0 | -650.8 | |
| 0.00 | 1.17 | 0.00 | 0.65 | -18.79 | 218.27 | -21.55 | 128.65 | 0.4471 | -693.0 | -517.5 | |
| 0.00 | 2.42 | 0.00 | 1.34 | -18.79 | 217.89 | -21.93 | 128.19 | 0.4517 | -545.0 | -608.2 | |
| 0.00 | 0.90 | 0.00 | 0.50 | -19.38 | 217.57 | -22.25 | 128.89 | 0.4609 | -771.0 | -548.3 | |
| 0.00 | 1.08 | 0.00 | 0.61 | -20.50 | 216.41 | -23.41 | 129.54 | 0.4845 | -628.0 | -555.8 | |
| 0.00 | 0.99 | 0.00 | 0.56 | -20.34 | 216.09 | -23.73 | 128.90 | 0.4869 | -781.0 | -613.9 | |
| 0.00 | 0.45 | 0.00 | 0.26 | -20.84 | 215.93 | -23.89 | 129.59 | 0.4931 | -345.0 | -309.6 | |
| 0.00 | 1.08 | 0.00 | 0.62 | -23.44 | 215.34 | -24.48 | 133.11 | 0.5227 | -750.0 | -672.3 | |
| 0.00 | 1.70 | 0.00 | 0.99 | -23.59 | 215.09 | -24.73 | 133.08 | 0.5269 | -598.0 | -498.1 | |
| 0.00 | 0.81 | 0.00 | 0.47 | -24.30 | 214.73 | -25.09 | 133.76 | 0.5372 | -721.0 | -649.8 | |
| 0.00 | 0.72 | 0.00 | 0.41 | -21.08 | 215.03 | -24.79 | 129.04 | 0.5056 | -581.0 | -509.2 | |
| 0.00 | 0.81 | 0.00 | 0.49 | -18.83 | 208.52 | -31.30 | 119.86 | 0.5691 | -474.0 | -395.0 | |
| 0.00 | 1.26 | 0.00 | 0.76 | -16.44 | 207.35 | -32.47 | 115.23 | 0.5713 | -747.0 | -634.4 | |
| 0.00 | 0.90 | 0.00 | 0.60 | -20.43 | 199.98 | -39.84 | 117.53 | 0.6793 | -455.0 | -490.1 | |
| 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. |
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| 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. |
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| 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. | |