SDO HMI 2014-09-25 14:00:33 UT
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| group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
| 306.73 | 1691.41 | 167.51 | 924.00 | -10.96 | 239.37 | -16.86 | 137.76 | 0.4202 | -14.8 | -48.3 | |
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| spot | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
| 0.00 | 1.68 | 0.00 | 0.88 | -10.79 | 247.56 | -8.67 | 153.97 | 0.3388 | 886.0 | 704.5 | |
| 0.00 | 0.97 | 0.00 | 0.52 | -12.58 | 246.84 | -9.38 | 154.43 | 0.3702 | 554.0 | 519.5 | |
| 1.33 | 3.45 | 0.71 | 1.85 | -13.41 | 246.65 | -9.57 | 154.95 | 0.3837 | 896.3 | 676.7 | |
| 0.00 | 1.15 | 0.00 | 0.60 | -9.11 | 246.80 | -9.42 | 149.53 | 0.3202 | 851.0 | 660.3 | |
| 90.40 | 566.94 | 48.00 | 301.19 | -10.90 | 244.94 | -11.28 | 147.72 | 0.3613 | 1338.7 | 440.0 | |
| 0.00 | 1.33 | 0.00 | 0.72 | -13.58 | 244.73 | -11.50 | 150.91 | 0.4002 | -845.0 | -638.3 | |
| 0.00 | 0.97 | 0.00 | 0.53 | -13.71 | 244.63 | -11.60 | 150.86 | 0.4028 | -825.0 | -579.4 | |
| 21.47 | 74.14 | 11.30 | 39.00 | -9.09 | 244.61 | -11.62 | 143.99 | 0.3398 | 1223.2 | 487.8 | |
| 0.00 | 1.24 | 0.00 | 0.67 | -13.66 | 244.28 | -11.95 | 150.07 | 0.4048 | -730.0 | -595.2 | |
| 0.00 | 1.68 | 0.00 | 0.90 | -12.83 | 244.14 | -12.09 | 148.68 | 0.3946 | 730.0 | 522.4 | |
| 0.00 | 1.06 | 0.00 | 0.56 | -9.38 | 244.25 | -11.97 | 143.68 | 0.3471 | 626.0 | 588.9 | |
| 4.95 | -5.00 | 2.64 | -5.00 | -11.37 | 244.05 | -12.18 | 146.41 | 0.3755 | 822.7 | 999999 | |
| 1.24 | -5.00 | 0.66 | -5.00 | -11.09 | 244.03 | -12.20 | 145.94 | 0.3719 | 659.9 | 999999 | |
| 1.86 | -5.00 | 0.99 | -5.00 | -11.41 | 243.76 | -12.46 | 145.86 | 0.3786 | 800.8 | 999999 | |
| 1.50 | -5.00 | 0.80 | -5.00 | -11.25 | 243.74 | -12.49 | 145.57 | 0.3767 | 750.7 | 999999 | |
| 2.30 | -5.00 | 1.23 | -5.00 | -11.57 | 243.69 | -12.53 | 145.95 | 0.3814 | 740.5 | 999999 | |
| 0.00 | 3.09 | 0.00 | 1.66 | -11.70 | 243.44 | -12.79 | 145.61 | 0.3855 | 421.0 | 433.4 | |
| 0.71 | 11.84 | 0.38 | 6.34 | -11.36 | 243.39 | -12.84 | 144.98 | 0.3813 | 858.5 | 594.6 | |
| 1.86 | -18.00 | 0.99 | -18.00 | -11.20 | 243.30 | -12.93 | 144.56 | 0.3801 | 826.9 | 999999 | |
| 0.00 | 4.51 | 0.00 | 2.39 | -9.34 | 243.35 | -12.88 | 141.59 | 0.3555 | 358.0 | 332.9 | |
| 0.00 | 1.86 | 0.00 | 1.00 | -12.00 | 243.07 | -13.15 | 145.30 | 0.3927 | 712.0 | 584.4 | |
| 0.00 | 0.88 | 0.00 | 0.47 | -9.10 | 243.20 | -13.02 | 140.83 | 0.3539 | -721.0 | -498.0 | |
| 0.97 | 5.74 | 0.52 | 3.05 | -9.60 | 243.12 | -13.11 | 141.55 | 0.3611 | -768.0 | -227.5 | |
| 0.00 | 0.97 | 0.00 | 0.53 | -13.06 | 242.83 | -13.40 | 146.32 | 0.4088 | 711.0 | 571.8 | |
| 0.00 | 1.50 | 0.00 | 0.81 | -12.71 | 242.78 | -13.44 | 145.74 | 0.4046 | 953.0 | 792.2 | |
| 0.00 | 0.88 | 0.00 | 0.48 | -14.35 | 242.65 | -13.57 | 147.71 | 0.4274 | 747.0 | 590.2 | |
| 0.00 | 4.06 | 0.00 | 2.24 | -15.06 | 242.48 | -13.75 | 148.28 | 0.4383 | 828.0 | 716.1 | |
| 0.00 | 1.77 | 0.00 | 0.96 | -12.62 | 242.53 | -13.69 | 145.12 | 0.4057 | 736.0 | 511.1 | |
| 0.00 | 0.97 | 0.00 | 0.53 | -12.31 | 242.20 | -14.02 | 144.02 | 0.4048 | 659.0 | 550.4 | |
| 0.35 | 1.86 | 0.19 | 1.01 | -12.50 | 242.13 | -14.10 | 144.16 | 0.4079 | 960.0 | 817.4 | |
| 1.15 | 61.41 | 0.62 | 33.05 | -10.63 | 242.20 | -14.03 | 141.38 | 0.3835 | 1058.5 | 330.0 | |
| 0.88 | 3.27 | 0.48 | 1.77 | -12.06 | 242.12 | -14.11 | 143.49 | 0.4023 | 973.1 | 787.4 | |
| 2.12 | -31.00 | 1.14 | -31.00 | -10.82 | 242.15 | -14.07 | 141.61 | 0.3863 | 1014.2 | 999999 | |
| 0.00 | 1.77 | 0.00 | 0.96 | -12.76 | 241.92 | -14.31 | 144.15 | 0.4132 | 667.0 | 588.8 | |
| 0.00 | 0.88 | 0.00 | 0.47 | -9.57 | 242.06 | -14.17 | 139.28 | 0.3717 | 640.0 | 449.1 | |
| 0.53 | 1.50 | 0.28 | 0.80 | -10.13 | 241.97 | -14.26 | 140.09 | 0.3796 | 945.7 | 882.7 | |
| 0.00 | 2.03 | 0.00 | 1.10 | -12.45 | 241.81 | -14.41 | 143.48 | 0.4102 | 731.0 | 659.4 | |
| 11.93 | -31.00 | 6.42 | -31.00 | -10.96 | 241.83 | -14.40 | 141.20 | 0.3912 | 930.5 | 999999 | |
| 0.00 | 1.15 | 0.00 | 0.65 | -17.29 | 241.41 | -14.82 | 149.00 | 0.4762 | 701.0 | 582.5 | |
| 0.00 | 1.06 | 0.00 | 0.57 | -11.78 | 241.76 | -14.47 | 142.36 | 0.4023 | 770.0 | 627.2 | |
| 0.00 | 1.68 | 0.00 | 0.91 | -12.07 | 241.58 | -14.65 | 142.48 | 0.4077 | 789.0 | 656.8 | |
| 0.00 | 0.80 | 0.00 | 0.43 | -10.21 | 241.68 | -14.55 | 139.65 | 0.3835 | 693.0 | 561.7 | |
| 0.00 | 1.24 | 0.00 | 0.66 | -9.42 | 241.72 | -14.51 | 138.34 | 0.3735 | 350.0 | 382.1 | |
| 0.00 | 2.47 | 0.00 | 1.35 | -12.71 | 241.48 | -14.75 | 143.24 | 0.4167 | 797.0 | 580.4 | |
| 0.00 | 2.56 | 0.00 | 1.40 | -13.33 | 241.25 | -14.98 | 143.70 | 0.4266 | 594.0 | 497.6 | |
| 0.00 | 3.45 | 0.00 | 1.87 | -12.34 | 241.22 | -15.01 | 142.19 | 0.4145 | 642.0 | 652.1 | |
| 1.15 | 10.43 | 0.62 | 5.61 | -10.31 | 241.26 | -14.96 | 139.03 | 0.3891 | 766.6 | 332.1 | |
| 0.00 | 2.47 | 0.00 | 1.34 | -12.06 | 241.10 | -15.12 | 141.56 | 0.4121 | 585.0 | 425.6 | |
| 0.00 | 1.50 | 0.00 | 0.81 | -10.76 | 241.02 | -15.21 | 139.33 | 0.3971 | 609.0 | 415.4 | |
| 0.00 | 0.97 | 0.00 | 0.52 | -10.58 | 240.71 | -15.52 | 138.45 | 0.3982 | -638.0 | -533.8 | |
| 0.00 | 1.33 | 0.00 | 0.72 | -10.69 | 240.20 | -16.03 | 137.71 | 0.4050 | 602.0 | 331.8 | |
| 0.00 | 1.33 | 0.00 | 0.72 | -10.38 | 240.12 | -16.11 | 137.04 | 0.4022 | 725.0 | 517.0 | |
| 0.00 | 1.86 | 0.00 | 1.01 | -11.14 | 239.92 | -16.31 | 137.96 | 0.4133 | 352.0 | 265.3 | |
| 0.00 | 13.34 | 0.00 | 7.24 | -10.89 | 239.87 | -16.36 | 137.46 | 0.4109 | 170.0 | 47.4 | |
| 0.00 | 2.56 | 0.00 | 1.39 | -10.52 | 239.82 | -16.40 | 136.75 | 0.4069 | 789.0 | 646.2 | |
| 0.00 | 1.15 | 0.00 | 0.62 | -9.69 | 239.33 | -16.90 | 134.44 | 0.4030 | -947.0 | -771.5 | |
| 1.68 | 13.96 | 0.92 | 7.61 | -11.08 | 239.12 | -17.11 | 136.49 | 0.4211 | -719.3 | -77.6 | |
| 0.00 | 0.71 | 0.00 | 0.38 | -10.55 | 239.02 | -17.20 | 135.43 | 0.4161 | 334.0 | 219.0 | |
| 0.62 | 30.04 | 0.34 | 16.32 | -9.95 | 238.90 | -17.33 | 134.19 | 0.4109 | -1011.7 | -580.7 | |
| 0.00 | 3.18 | 0.00 | 1.72 | -9.57 | 238.92 | -17.31 | 133.55 | 0.4065 | -872.0 | -664.4 | |
| 0.00 | 1.06 | 0.00 | 0.58 | -11.79 | 238.75 | -17.48 | 137.03 | 0.4331 | 627.0 | 430.8 | |
| 1.33 | -59.00 | 0.72 | -59.00 | -9.90 | 238.71 | -17.52 | 133.78 | 0.4124 | -1104.9 | 999999 | |
| 0.00 | 1.77 | 0.00 | 0.97 | -11.74 | 238.40 | -17.83 | 136.38 | 0.4363 | 560.0 | 477.1 | |
| 0.00 | 0.71 | 0.00 | 0.39 | -10.16 | 238.50 | -17.73 | 133.89 | 0.4176 | -883.0 | -751.6 | |
| 0.00 | 1.68 | 0.00 | 0.91 | -9.56 | 238.44 | -17.79 | 132.74 | 0.4119 | -823.0 | -620.4 | |
| 0.00 | 1.24 | 0.00 | 0.68 | -10.26 | 238.30 | -17.92 | 133.75 | 0.4210 | -920.0 | -712.9 | |
| 0.00 | 1.24 | 0.00 | 0.67 | -9.69 | 238.30 | -17.92 | 132.75 | 0.4149 | -717.0 | -589.2 | |
| 0.00 | 0.97 | 0.00 | 0.53 | -10.92 | 238.17 | -18.06 | 134.67 | 0.4298 | -300.0 | -218.3 | |
| 0.88 | 2.65 | 0.48 | 1.45 | -10.45 | 238.13 | -18.10 | 133.81 | 0.4251 | -962.8 | -735.3 | |
| 0.00 | 0.80 | 0.00 | 0.44 | -11.28 | 238.01 | -18.21 | 135.01 | 0.4354 | -622.0 | -416.4 | |
| 0.71 | 79.17 | 0.39 | 43.87 | -11.29 | 237.75 | -18.47 | 134.62 | 0.4384 | -742.4 | -578.5 | |
| 0.00 | 1.06 | 0.00 | 0.59 | -11.92 | 237.71 | -18.52 | 135.59 | 0.4459 | -208.0 | -202.5 | |
| 0.00 | 2.83 | 0.00 | 1.56 | -11.77 | 237.56 | -18.67 | 135.11 | 0.4459 | -285.0 | -340.3 | |
| 0.00 | 1.50 | 0.00 | 0.82 | -10.47 | 237.65 | -18.58 | 133.08 | 0.4308 | -869.0 | -754.9 | |
| 3.18 | -71.00 | 1.75 | -71.00 | -11.04 | 237.58 | -18.65 | 133.94 | 0.4377 | -1134.5 | 999999 | |
| 0.00 | 2.03 | 0.00 | 1.11 | -10.31 | 237.62 | -18.60 | 132.78 | 0.4294 | -899.0 | -734.2 | |
| 0.00 | 1.50 | 0.00 | 0.83 | -10.63 | 237.54 | -18.69 | 133.19 | 0.4338 | -822.0 | -740.9 | |
| 0.00 | 0.88 | 0.00 | 0.49 | -10.76 | 237.43 | -18.79 | 133.25 | 0.4364 | -804.0 | -685.2 | |
| 0.00 | 2.21 | 0.00 | 1.20 | -9.32 | 237.49 | -18.74 | 130.80 | 0.4205 | 651.0 | 454.9 | |
| 0.00 | 0.62 | 0.00 | 0.35 | -13.09 | 237.13 | -19.10 | 136.52 | 0.4650 | -623.0 | -513.3 | |
| 1.68 | -71.00 | 0.93 | -71.00 | -11.53 | 237.12 | -19.11 | 134.06 | 0.4482 | -967.9 | 999999 | |
| 0.00 | 1.06 | 0.00 | 0.61 | -15.75 | 236.75 | -19.47 | 139.76 | 0.4987 | 826.0 | 605.4 | |
| 0.00 | 2.30 | 0.00 | 1.31 | -15.92 | 236.67 | -19.56 | 139.86 | 0.5014 | 766.0 | 665.8 | |
| 3.36 | -71.00 | 1.87 | -71.00 | -12.18 | 236.81 | -19.42 | 134.64 | 0.4585 | -1066.8 | 999999 | |
| 3.53 | -71.00 | 1.96 | -71.00 | -11.61 | 236.79 | -19.44 | 133.69 | 0.4527 | 547.3 | 999999 | |
| 0.00 | 1.33 | 0.00 | 0.73 | -9.65 | 236.92 | -19.30 | 130.55 | 0.4307 | -920.0 | -684.1 | |
| 0.00 | 1.15 | 0.00 | 0.63 | -10.03 | 236.80 | -19.43 | 131.04 | 0.4361 | -801.0 | -564.8 | |
| 4.77 | -71.00 | 2.66 | -71.00 | -12.29 | 236.57 | -19.65 | 134.45 | 0.4623 | -869.7 | 999999 | |
| 0.00 | 1.24 | 0.00 | 0.71 | -15.94 | 236.14 | -20.09 | 139.13 | 0.5068 | 676.0 | 521.8 | |
| 0.00 | 0.97 | 0.00 | 0.54 | -11.76 | 236.32 | -19.91 | 133.24 | 0.4595 | 560.0 | 438.9 | |
| 0.00 | 2.92 | 0.00 | 1.62 | -11.50 | 236.31 | -19.92 | 132.81 | 0.4570 | -425.0 | -279.7 | |
| 0.00 | 2.39 | 0.00 | 1.37 | -16.03 | 235.69 | -20.53 | 138.63 | 0.5121 | 615.0 | 591.7 | |
| 0.71 | 6.45 | 0.39 | 3.59 | -11.36 | 236.03 | -20.20 | 132.17 | 0.4587 | -930.8 | -608.1 | |
| 0.53 | 2.47 | 0.30 | 1.38 | -11.58 | 235.91 | -20.32 | 132.38 | 0.4623 | -828.5 | -659.0 | |
| 0.00 | 1.94 | 0.00 | 1.07 | -9.13 | 235.92 | -20.31 | 128.17 | 0.4377 | -909.0 | -767.4 | |
| 0.00 | 0.88 | 0.00 | 0.50 | -13.38 | 235.59 | -20.63 | 134.74 | 0.4846 | 380.0 | 296.2 | |
| 0.00 | 1.68 | 0.00 | 0.95 | -13.87 | 235.45 | -20.78 | 135.26 | 0.4913 | -770.0 | -670.0 | |
| 0.00 | 1.15 | 0.00 | 0.63 | -8.92 | 235.80 | -20.43 | 127.62 | 0.4371 | -800.0 | -694.3 | |
| 0.00 | 1.24 | 0.00 | 0.71 | -14.49 | 235.26 | -20.97 | 135.90 | 0.5000 | -799.0 | -669.4 | |
| 0.00 | 2.39 | 0.00 | 1.35 | -12.79 | 235.25 | -20.98 | 133.37 | 0.4822 | -828.0 | -603.2 | |
| 2.12 | 596.02 | 1.19 | 333.42 | -11.30 | 235.11 | -21.12 | 130.81 | 0.4687 | -876.2 | -478.6 | |
| 4.33 | -101.00 | 2.45 | -101.00 | -12.30 | 234.76 | -21.46 | 131.95 | 0.4827 | -672.6 | 999999 | |
| 4.86 | -101.00 | 2.72 | -101.00 | -10.91 | 234.78 | -21.45 | 129.72 | 0.4687 | -789.8 | 999999 | |
| 0.97 | -101.00 | 0.55 | -101.00 | -11.57 | 234.73 | -21.50 | 130.74 | 0.4758 | -981.9 | 999999 | |
| 0.27 | -101.00 | 0.15 | -101.00 | -11.44 | 234.74 | -21.49 | 130.55 | 0.4744 | -1077.3 | 999999 | |
| 0.00 | 1.41 | 0.00 | 0.80 | -12.59 | 234.64 | -21.59 | 132.24 | 0.4870 | -554.0 | -526.2 | |
| 2.56 | 46.48 | 1.46 | 26.49 | -13.11 | 234.53 | -21.70 | 132.88 | 0.4935 | -880.2 | -420.6 | |
| 86.33 | -101.00 | 48.20 | -101.00 | -10.28 | 234.73 | -21.50 | 128.59 | 0.4632 | -1183.1 | 999999 | |
| 1.50 | -101.00 | 0.84 | -101.00 | -10.85 | 234.52 | -21.71 | 129.29 | 0.4712 | -726.7 | 999999 | |
| 4.06 | -101.00 | 2.29 | -101.00 | -11.68 | 234.42 | -21.81 | 130.51 | 0.4804 | -995.8 | 999999 | |
| 11.22 | -101.00 | 6.35 | -101.00 | -11.97 | 234.33 | -21.90 | 130.86 | 0.4843 | -860.5 | 999999 | |
| 3.89 | -107.00 | 2.21 | -107.00 | -12.77 | 234.26 | -21.97 | 132.01 | 0.4931 | -792.2 | 999999 | |
| 0.00 | 1.86 | 0.00 | 1.05 | -12.35 | 234.30 | -21.93 | 131.42 | 0.4885 | -592.0 | -526.9 | |
| 2.74 | -101.00 | 1.54 | -101.00 | -11.37 | 234.25 | -21.98 | 129.79 | 0.4795 | -671.3 | 999999 | |
| 0.00 | 2.39 | 0.00 | 1.36 | -12.49 | 234.02 | -22.21 | 131.28 | 0.4931 | -735.0 | -586.0 | |
| 3.18 | -101.00 | 1.80 | -101.00 | -11.83 | 234.01 | -22.22 | 130.22 | 0.4866 | -687.6 | 999999 | |
| 4.51 | -101.00 | 2.54 | -101.00 | -10.97 | 234.05 | -22.18 | 128.88 | 0.4780 | -801.4 | 999999 | |
| 0.71 | -107.00 | 0.40 | -107.00 | -13.01 | 233.83 | -22.39 | 131.84 | 0.5002 | -685.0 | 999999 | |
| 2.74 | -101.00 | 1.53 | -101.00 | -10.03 | 234.06 | -22.17 | 127.29 | 0.4690 | -885.5 | 999999 | |
| 0.00 | 12.99 | 0.00 | 7.40 | -12.45 | 233.69 | -22.54 | 130.78 | 0.4963 | -507.0 | -589.0 | |
| 0.00 | 1.24 | 0.00 | 0.71 | -12.52 | 233.38 | -22.85 | 130.52 | 0.5006 | -491.0 | -445.2 | |
| 1.06 | 2.65 | 0.61 | 1.51 | -12.24 | 233.27 | -22.95 | 129.95 | 0.4992 | -798.9 | -658.0 | |
| 0.00 | 3.45 | 0.00 | 1.97 | -12.45 | 232.95 | -23.27 | 129.88 | 0.5048 | -747.0 | -496.3 | |
| 0.00 | 1.77 | 0.00 | 1.00 | -10.42 | 233.00 | -23.23 | 126.67 | 0.4856 | -463.0 | -445.2 | |
| 0.00 | 1.15 | 0.00 | 0.66 | -12.43 | 232.69 | -23.54 | 129.53 | 0.5077 | -585.0 | -473.3 | |
| 0.00 | 0.97 | 0.00 | 0.57 | -15.91 | 232.02 | -24.21 | 133.79 | 0.5484 | -661.0 | -467.7 | |
| 0.00 | 0.80 | 0.00 | 0.46 | -12.22 | 232.40 | -23.82 | 128.87 | 0.5091 | -501.0 | -441.6 | |
| 0.00 | 2.74 | 0.00 | 1.60 | -14.12 | 232.10 | -24.13 | 131.37 | 0.5303 | -707.0 | -579.9 | |
| 0.00 | 3.18 | 0.00 | 1.81 | -10.89 | 232.39 | -23.84 | 126.73 | 0.4971 | -362.0 | -462.6 | |
| 0.00 | 4.68 | 0.00 | 2.72 | -13.42 | 232.01 | -24.22 | 130.23 | 0.5247 | -691.0 | -587.3 | |
| 0.00 | 1.15 | 0.00 | 0.67 | -13.56 | 231.72 | -24.51 | 130.11 | 0.5293 | -372.0 | -364.2 | |
| 0.00 | 0.62 | 0.00 | 0.35 | -10.83 | 231.76 | -24.47 | 125.91 | 0.5043 | -535.0 | -466.3 | |
| 0.00 | 0.71 | 0.00 | 0.40 | -7.93 | 230.30 | -25.92 | 119.47 | 0.4993 | -841.0 | -762.8 | |
| 0.00 | 1.41 | 0.00 | 0.81 | -7.98 | 230.06 | -26.16 | 119.31 | 0.5028 | -682.0 | -535.2 | |
| 0.00 | 0.71 | 0.00 | 0.40 | -7.67 | 230.05 | -26.18 | 118.76 | 0.5007 | -612.0 | -527.4 | |
| 0.00 | 1.41 | 0.00 | 0.81 | -3.42 | 228.37 | -27.86 | 109.58 | 0.4971 | -717.0 | -564.9 | |
| 0.00 | 1.50 | 0.00 | 1.00 | -20.71 | 224.21 | -32.02 | 132.02 | 0.6699 | -364.0 | -320.1 | |
| 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. | |