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

11944 571.04 3256.89 326.07 1840.21 -9.72 99.29 27.80 255.85 0.4747 537.4 157.2


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

SDO HMI 2014-01-09 23:00:24 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 0.93 0.00 0.57 -5.24 106.87 35.37 266.59 0.5797 -594.0 -476.0
2 0.00 0.93 0.00 0.57 -5.04 106.64 35.14 266.93 0.5764 -554.0 -499.6
3 0.00 1.36 0.00 0.82 -6.59 106.35 34.85 264.22 0.5728 653.0 556.4
4 153.42 1504.96 91.42 887.91 -8.77 105.17 33.68 260.22 0.5583 1262.5 365.3
5 1.10 -4.00 0.65 -4.00 -7.04 104.70 33.20 263.27 0.5494 708.2 999999
6 0.85 -4.00 0.50 -4.00 -9.52 104.79 33.29 258.78 0.5541 904.1 999999
7 1.78 -4.00 1.05 -4.00 -7.40 104.41 32.91 262.57 0.5455 930.6 999999
8 0.00 4.08 0.00 2.42 -10.60 104.70 33.20 256.84 0.5549 -163.0 -100.4
9 44.68 -4.00 26.36 -4.00 -7.85 104.37 32.88 261.74 0.5455 1282.9 999999
10 2.80 -4.00 1.65 -4.00 -8.04 103.90 32.40 261.31 0.5388 1227.8 999999
11 1.78 -4.00 1.04 -4.00 -7.58 103.57 32.08 262.12 0.5336 992.4 999999
12 1.27 -4.00 0.75 -4.00 -8.77 103.54 32.04 259.90 0.5347 960.9 999999
13 0.00 7.31 0.00 4.29 -10.42 103.71 32.22 256.87 0.5405 3.0 49.7
14 106.78 -4.00 62.40 -4.00 -8.33 103.46 31.97 260.71 0.5329 1455.6 999999
15 0.85 -4.00 0.49 -4.00 -8.97 102.82 31.32 259.36 0.5246 1015.3 999999
16 4.08 -4.00 2.37 -4.00 -8.76 102.77 31.27 259.73 0.5235 1250.0 999999
17 0.76 -4.00 0.44 -4.00 -7.73 102.64 31.15 261.69 0.5201 1097.6 999999
18 11.13 -4.00 6.44 -4.00 -8.00 102.63 31.13 261.17 0.5202 1528.3 999999
19 0.00 1.36 0.00 0.79 -11.47 102.67 31.17 254.60 0.5283 -737.0 -532.0
20 2.21 -4.00 1.28 -4.00 -8.57 102.30 30.80 260.00 0.5162 1087.4 999999
21 0.00 7.65 0.00 4.43 -10.56 102.39 30.89 256.22 0.5218 134.0 9.0
22 4.93 31.77 2.83 18.22 -6.75 101.88 30.38 263.48 0.5076 1068.1 679.7
23 0.00 1.19 0.00 0.69 -10.89 102.18 30.68 255.52 0.5197 -701.0 -543.6
24 0.00 1.53 0.00 0.90 -15.10 102.58 31.08 247.94 0.5400 640.0 523.8
25 0.00 0.42 0.00 0.24 -10.10 101.75 30.25 256.89 0.5113 -642.0 -558.4
26 0.00 2.29 0.00 1.31 -6.92 101.41 29.91 263.09 0.5007 1001.0 805.2
27 0.00 1.95 0.00 1.12 -7.25 101.33 29.83 262.43 0.4998 948.0 783.2
28 3.82 12.74 2.18 7.25 -7.58 100.97 29.48 261.69 0.4950 1001.1 787.7
29 0.00 2.29 0.00 1.30 -6.70 100.88 29.38 263.46 0.4925 585.0 609.4
30 1.61 -28.00 0.92 -28.00 -7.79 100.89 29.39 261.25 0.4940 893.1 999999
31 2.38 65.67 1.35 37.13 -7.18 100.67 29.18 262.46 0.4899 968.8 458.3
32 0.00 0.59 0.00 0.34 -9.63 100.87 29.38 257.55 0.4973 -414.0 -389.0
33 2.72 -31.00 1.54 -31.00 -6.69 100.30 28.80 263.41 0.4837 -352.3 999999
34 0.00 0.85 0.00 0.48 -9.97 100.56 29.06 256.78 0.4935 -724.0 -631.5
35 1.70 -31.00 0.96 -31.00 -7.46 100.25 28.75 261.81 0.4839 1085.2 999999
36 0.00 0.59 0.00 0.34 -6.49 100.12 28.62 263.80 0.4807 -564.0 -361.9
37 0.00 1.61 0.00 0.91 -7.85 100.07 28.58 260.96 0.4818 882.0 796.1
38 0.00 1.02 0.00 0.58 -10.01 100.16 28.66 256.55 0.4876 632.0 491.8
39 0.00 0.85 0.00 0.48 -8.59 100.00 28.50 259.41 0.4820 644.0 550.8
40 0.00 1.70 0.00 0.96 -8.72 99.80 28.31 259.10 0.4793 794.0 642.0
41 0.00 1.19 0.00 0.67 -8.42 99.68 28.18 259.67 0.4768 768.0 672.6
42 0.00 1.10 0.00 0.62 -7.18 99.55 28.06 262.25 0.4729 810.0 686.2
43 3.40 24.13 1.91 13.53 -6.72 99.46 27.96 263.23 0.4709 -680.1 33.4
44 1.10 -43.00 0.62 -43.00 -6.95 99.47 27.98 262.73 0.4714 575.2 999999
45 0.00 0.93 0.00 0.53 -9.17 99.57 28.07 258.09 0.4768 523.0 462.3
46 0.00 3.06 0.00 1.72 -8.46 99.48 27.98 259.54 0.4739 962.0 797.4
47 0.00 1.27 0.00 0.72 -9.03 99.35 27.86 258.32 0.4732 837.0 752.7
48 0.00 1.87 0.00 1.04 -6.67 98.95 27.45 263.24 0.4631 -829.0 -543.9
49 0.00 1.27 0.00 0.71 -6.82 98.86 27.36 262.90 0.4618 -744.0 -559.7
50 0.00 1.78 0.00 0.99 -7.84 98.42 26.93 260.60 0.4567 667.0 548.0
51 0.00 1.27 0.00 0.74 -18.22 99.67 28.17 240.54 0.5172 366.0 337.7
52 0.00 1.44 0.00 0.83 -17.98 99.52 28.03 240.85 0.5138 509.0 388.5
53 0.00 0.85 0.00 0.49 -17.77 99.38 27.89 241.12 0.5107 679.0 574.7
54 0.00 2.38 0.00 1.32 -7.41 97.90 26.40 261.41 0.4478 848.0 768.9
55 0.00 1.10 0.00 0.63 -17.44 98.46 26.96 241.03 0.4964 752.0 619.5
56 0.00 1.53 0.00 0.88 -18.75 98.36 26.86 238.56 0.5035 -751.0 -584.8
57 0.00 2.04 0.00 1.12 -7.00 96.98 25.48 262.16 0.4329 858.0 694.1
58 87.84 521.84 48.55 288.27 -10.87 97.17 25.67 253.47 0.4456 1438.9 409.2
59 0.00 1.78 0.00 0.98 -6.62 96.83 25.33 263.00 0.4300 -670.0 -620.4
60 0.00 1.19 0.00 0.65 -7.83 96.80 25.30 260.19 0.4315 670.0 581.2
61 0.51 -58.00 0.28 -58.00 -9.60 96.86 25.36 256.15 0.4368 786.0 999999
62 0.00 1.78 0.00 0.98 -6.62 96.60 25.10 262.95 0.4264 -740.0 -625.5
63 1.78 -58.00 0.98 -58.00 -9.73 96.74 25.24 255.83 0.4353 946.6 999999
64 3.14 -58.00 1.73 -58.00 -9.70 96.57 25.07 255.81 0.4327 1087.2 999999
65 0.00 1.53 0.00 0.83 -5.81 96.29 24.80 264.83 0.4208 -758.0 -677.1
66 0.00 1.02 0.00 0.56 -6.34 96.29 24.79 263.57 0.4212 -715.0 -497.6
67 0.00 2.89 0.00 1.58 -7.76 96.20 24.71 260.18 0.4221 677.0 604.6
68 0.00 1.87 0.00 1.02 -5.52 96.09 24.59 265.50 0.4173 -812.0 -629.2
69 0.00 0.59 0.00 0.32 -8.29 96.24 24.74 258.94 0.4238 608.0 537.0
70 0.00 1.53 0.00 0.83 -8.23 96.10 24.60 259.03 0.4215 760.0 679.8
71 0.00 1.10 0.00 0.60 -8.59 96.13 24.63 258.20 0.4228 813.0 574.5
72 0.00 1.02 0.00 0.56 -9.36 96.05 24.55 256.37 0.4237 533.0 368.7
73 0.85 97.61 0.46 52.83 -9.16 95.90 24.41 256.78 0.4208 894.1 -305.4
74 0.00 1.61 0.00 0.88 -9.78 95.85 24.35 255.30 0.4219 826.0 526.1
75 0.00 0.68 0.00 0.37 -8.80 95.75 24.25 257.54 0.4175 447.0 367.4
76 0.00 5.44 0.00 2.96 -9.61 95.71 24.21 255.63 0.4192 114.0 161.1
77 0.00 1.19 0.00 0.65 -9.41 95.36 23.87 255.94 0.4133 -288.0 -335.7
78 0.00 2.72 0.00 1.47 -8.08 95.24 23.75 259.10 0.4078 275.0 277.0
79 0.00 1.53 0.00 0.83 -9.88 95.37 23.87 254.82 0.4149 924.0 771.6
80 0.00 0.76 0.00 0.41 -5.41 94.75 23.26 265.64 0.3959 -761.0 -607.0
81 0.85 -73.00 0.46 -73.00 -9.57 94.95 23.45 255.36 0.4074 -710.3 999999
82 0.00 19.20 0.00 10.42 -10.22 95.00 23.50 253.83 0.4104 606.0 587.0
83 1.87 -73.00 1.01 -73.00 -9.34 94.74 23.24 255.82 0.4034 -1029.8 999999
84 0.00 6.12 0.00 3.32 -10.52 94.83 23.33 253.01 0.4089 457.0 381.1
85 5.10 -73.00 2.76 -73.00 -9.52 94.65 23.16 255.34 0.4026 -1052.5 999999
86 0.51 -73.00 0.28 -73.00 -9.16 94.63 23.13 256.20 0.4011 -969.0 999999
87 0.00 1.53 0.00 0.83 -11.12 94.71 23.22 251.52 0.4096 825.0 773.2
88 2.46 -73.00 1.33 -73.00 -9.40 94.39 22.89 255.48 0.3981 -1056.8 999999
89 0.00 1.53 0.00 0.82 -8.43 94.23 22.73 257.83 0.3927 -540.0 -407.9
90 0.00 3.31 0.00 1.79 -11.42 94.31 22.82 250.53 0.4049 773.0 699.8
91 0.00 2.38 0.00 1.28 -8.52 94.10 22.61 257.54 0.3910 -815.0 -728.3
92 0.00 1.27 0.00 0.69 -11.63 94.30 22.80 250.02 0.4056 710.0 605.3
93 0.76 7.48 0.41 4.03 -9.89 94.03 22.53 254.09 0.3943 -996.7 -708.8
94 0.00 5.52 0.00 2.97 -9.33 93.96 22.46 255.45 0.3912 -307.0 -317.2
95 0.85 4.33 0.46 2.34 -11.43 94.02 22.52 250.31 0.4005 1099.2 743.5
96 0.00 2.46 0.00 1.33 -12.27 94.03 22.53 248.33 0.4046 768.0 673.3
97 0.00 1.02 0.00 0.55 -9.60 93.82 22.32 254.69 0.3899 -876.0 -739.2
98 0.68 2.04 0.36 1.09 -9.84 93.64 22.14 253.98 0.3881 -955.4 -777.1
99 0.00 6.97 0.00 3.74 -9.51 93.55 22.06 254.75 0.3855 -902.0 -746.0
100 0.00 1.27 0.00 0.69 -13.14 93.85 22.35 246.15 0.4066 842.0 789.5
101 0.00 1.02 0.00 0.55 -8.60 93.46 21.97 257.06 0.3812 -597.0 -446.6
102 0.00 1.19 0.00 0.64 -12.45 93.75 22.25 247.67 0.4015 816.0 666.3
103 0.00 5.61 0.00 3.00 -9.01 93.42 21.93 255.97 0.3818 -708.0 -689.5
104 0.00 0.68 0.00 0.36 -7.68 93.35 21.85 259.40 0.3769 -747.0 -619.1
105 0.00 1.36 0.00 0.74 -13.41 93.74 22.24 245.43 0.4066 902.0 735.3
106 0.00 1.10 0.00 0.60 -13.23 93.69 22.19 245.80 0.4049 975.0 788.1
107 0.34 1.70 0.18 0.91 -9.78 93.38 21.88 253.96 0.3838 -1075.2 -868.7
108 0.00 2.72 0.00 1.46 -10.05 93.33 21.83 253.25 0.3841 -646.0 -627.2
109 0.00 5.01 0.00 2.68 -8.93 93.16 21.66 256.04 0.3774 -930.0 -806.2
110 0.00 1.10 0.00 0.60 -13.74 93.41 21.92 244.37 0.4039 748.0 567.4
111 2.89 36.78 1.54 19.60 -9.92 92.84 21.34 253.29 0.3760 -1080.4 -870.5
112 0.00 1.19 0.00 0.63 -9.53 92.81 21.32 254.28 0.3741 -864.0 -795.4
113 0.00 1.27 0.00 0.68 -9.03 92.75 21.25 255.56 0.3713 -870.0 -830.4
114 4.84 639.84 2.59 341.30 -10.99 92.75 21.26 250.49 0.3793 -982.1 -246.7
115 0.00 5.01 0.00 2.71 -15.02 92.92 21.42 241.00 0.4051 927.0 600.1
116 0.00 3.99 0.00 2.12 -9.31 92.32 20.82 254.57 0.3655 -992.0 -863.3
117 15.55 -114.00 8.30 -114.00 -11.32 92.39 20.90 249.35 0.3754 -1025.9 999999
118 2.63 -111.00 1.40 -111.00 -9.84 92.29 20.79 253.13 0.3671 -1149.2 999999
119 1.10 -111.00 0.59 -111.00 -9.58 92.21 20.71 253.78 0.3648 -1090.3 999999
120 0.00 5.18 0.00 2.75 -8.93 92.14 20.64 255.49 0.3613 -977.0 -842.3
121 5.44 -114.00 2.91 -114.00 -12.52 92.29 20.80 246.27 0.3803 867.5 999999
122 1.27 -114.00 0.68 -114.00 -11.00 92.05 20.55 249.90 0.3686 -1030.5 999999
123 7.48 -114.00 3.99 -114.00 -12.16 92.01 20.51 246.89 0.3740 -801.7 999999
124 4.84 -114.00 2.58 -114.00 -11.72 91.97 20.48 247.99 0.3711 -926.5 999999
125 0.00 4.25 0.00 2.25 -9.05 91.79 20.30 254.94 0.3563 -1075.0 -883.4
126 1.70 -114.00 0.90 -114.00 -11.22 91.87 20.37 249.20 0.3669 -1013.4 999999
127 2.12 -114.00 1.13 -114.00 -11.49 91.73 20.23 248.38 0.3662 -1126.0 999999
128 0.00 2.46 0.00 1.30 -9.12 91.54 20.05 254.61 0.3526 -973.0 -853.7
129 1.10 -114.00 0.59 -114.00 -11.28 91.62 20.12 248.82 0.3634 -1174.8 999999
130 4.84 -114.00 2.58 -114.00 -11.93 91.64 20.14 247.14 0.3672 -947.0 999999
131 1.95 -114.00 1.04 -114.00 -11.01 91.54 20.04 249.45 0.3608 -1091.1 999999
132 0.00 1.19 0.00 0.63 -8.59 91.36 19.86 255.97 0.3477 -852.0 -715.1
133 4.42 -114.00 2.35 -114.00 -12.27 91.37 19.88 246.03 0.3652 -950.0 999999
134 1.44 -114.00 0.77 -114.00 -12.83 91.42 19.92 244.64 0.3693 -534.8 999999
135 0.00 1.78 0.00 0.94 -8.50 91.13 19.63 256.08 0.3439 -784.0 -703.9
136 0.00 1.02 0.00 0.54 -9.92 91.21 19.71 252.14 0.3506 -819.0 -571.3
137 0.00 1.02 0.00 0.54 -11.14 91.29 19.79 248.91 0.3577 -848.0 -683.1
138 5.35 -114.00 2.85 -114.00 -12.60 91.33 19.84 245.15 0.3666 -911.6 999999
139 0.00 1.61 0.00 0.85 -10.46 91.18 19.68 250.65 0.3526 -812.0 -652.9
140 7.22 -114.00 3.86 -114.00 -13.91 91.41 19.92 241.98 0.3762 1049.2 999999
141 0.00 2.21 0.00 1.17 -11.32 91.08 19.58 248.23 0.3554 -839.0 -622.7
142 1.78 -114.00 0.95 -114.00 -12.34 91.03 19.53 245.52 0.3604 -1125.1 999999
143 0.42 1.61 0.22 0.85 -11.65 90.97 19.48 247.26 0.3557 -1047.0 -884.2
144 0.59 -114.00 0.32 -114.00 -12.93 91.04 19.54 244.00 0.3643 -687.1 999999
145 0.68 8.75 0.36 4.62 -10.50 90.86 19.37 250.29 0.3479 -1218.0 -883.5
146 0.00 1.70 0.00 0.92 -17.77 91.41 19.92 233.30 0.4064 -717.0 -598.0
147 0.00 1.19 0.00 0.63 -10.68 90.69 19.19 249.63 0.3461 -927.0 -772.4
148 3.65 -114.00 1.94 -114.00 -12.97 90.79 19.29 243.64 0.3609 -888.0 999999
149 0.00 1.61 0.00 0.85 -12.07 90.72 19.22 245.89 0.3543 -958.0 -803.4
150 0.00 1.78 0.00 0.93 -6.78 90.26 18.77 260.75 0.3251 -884.0 -624.0
151 0.00 0.85 0.00 0.45 -12.64 90.60 19.10 244.28 0.3560 -803.0 -707.5
152 0.00 1.70 0.00 0.90 -10.95 90.48 18.98 248.70 0.3443 -783.0 -579.5
153 0.76 5.35 0.40 2.82 -11.66 90.43 18.94 246.70 0.3476 -1106.1 -902.3
154 0.00 0.93 0.00 0.49 -12.71 90.48 18.98 243.98 0.3546 -882.0 -721.2
155 0.51 8.75 0.27 4.62 -12.20 90.41 18.91 245.24 0.3504 -1036.2 -752.2
156 0.93 2.12 0.49 1.11 -6.64 90.04 18.54 261.11 0.3211 -908.0 -723.6
157 0.00 0.34 0.00 0.18 -13.07 90.35 18.85 242.90 0.3551 -572.0 -555.0
158 0.00 3.48 0.00 1.84 -12.86 90.30 18.80 243.39 0.3530 -779.0 -755.1
159 0.00 1.44 0.00 0.76 -12.56 90.24 18.75 244.10 0.3502 -864.0 -698.5
160 0.00 1.10 0.00 0.58 -11.94 90.20 18.70 245.72 0.3457 -861.0 -783.5
161 3.99 -114.00 2.11 -114.00 -13.43 90.05 18.56 241.62 0.3534 -927.4 999999
162 0.00 1.27 0.00 0.67 -11.94 89.91 18.42 245.40 0.3414 -904.0 -807.9
163 0.00 1.19 0.00 0.62 -10.16 89.80 18.30 250.31 0.3298 -943.0 -765.1
164 0.00 1.27 0.00 0.66 -6.53 89.60 18.10 261.28 0.3137 -874.0 -711.5
165 0.00 1.53 0.00 0.80 -9.66 89.68 18.18 251.67 0.3255 -839.0 -641.4
166 8.07 -114.00 4.27 -114.00 -13.70 89.92 18.42 240.76 0.3534 -1032.7 999999
167 0.00 1.36 0.00 0.72 -12.42 89.76 18.26 243.93 0.3422 -991.0 -805.6
168 2.04 3.65 1.07 1.93 -12.72 89.71 18.22 243.08 0.3435 -1029.6 -835.4
169 0.00 1.27 0.00 0.67 -12.22 89.61 18.12 244.32 0.3387 -989.0 -885.3
170 0.00 6.37 0.00 3.36 -12.99 89.64 18.14 242.27 0.3443 -856.0 -743.0
171 0.00 1.44 0.00 0.76 -11.77 89.55 18.05 245.48 0.3350 -1005.0 -894.4
172 0.00 0.93 0.00 0.49 -7.36 89.28 17.79 258.48 0.3106 -782.0 -618.2
173 0.00 1.61 0.00 0.85 -12.57 89.58 18.08 243.31 0.3405 -1128.0 -896.7
174 0.00 1.02 0.00 0.53 -8.07 89.28 17.79 256.23 0.3128 -885.0 -755.1
175 0.00 1.87 0.00 0.97 -6.68 89.23 17.73 260.63 0.3080 -865.0 -682.3
176 0.00 1.10 0.00 0.59 -15.75 89.80 18.31 235.63 0.3679 -660.0 -538.3
177 6.97 -114.00 3.68 -114.00 -13.77 89.60 18.10 240.20 0.3494 -1182.8 999999
178 0.00 1.10 0.00 0.59 -16.38 89.64 18.14 233.93 0.3712 -765.0 -602.3
179 0.00 1.70 0.00 0.89 -11.15 89.20 17.70 246.84 0.3259 -893.0 -779.2
180 1.78 -114.00 0.94 -114.00 -13.81 89.29 17.79 239.70 0.3451 -1000.1 999999
181 0.00 2.80 0.00 1.47 -12.67 89.17 17.67 242.56 0.3352 -824.0 -807.5
182 0.00 2.80 0.00 1.46 -10.00 88.75 17.26 249.79 0.3127 -809.0 -757.5
183 0.00 7.65 0.00 4.01 -12.65 88.88 17.39 242.27 0.3309 -726.0 -727.0
184 0.00 3.14 0.00 1.64 -11.58 88.81 17.32 245.19 0.3227 -949.0 -762.1
185 0.00 1.53 0.00 0.80 -10.69 88.66 17.17 247.64 0.3151 -865.0 -679.3
186 0.00 2.97 0.00 1.54 -7.14 88.37 16.88 258.69 0.2951 -831.0 -617.7
187 0.00 2.29 0.00 1.20 -12.12 88.56 17.07 243.35 0.3225 -871.0 -893.0
188 0.00 2.55 0.00 1.34 -13.04 88.50 17.00 240.68 0.3282 -655.0 -693.1
189 0.00 2.38 0.00 1.24 -12.60 88.44 16.94 241.83 0.3240 -800.0 -694.4
190 0.00 2.97 0.00 1.55 -11.74 88.32 16.82 244.14 0.3163 -1016.0 -834.9
191 0.00 1.53 0.00 0.79 -7.57 87.46 15.96 256.63 0.2815 -1023.0 -855.2
192 0.00 1.53 0.00 0.80 -12.49 87.61 16.11 241.01 0.3112 -977.0 -779.4
193 0.00 0.93 0.00 0.49 -14.73 87.73 16.24 235.09 0.3313 -788.0 -565.8
194 0.00 1.19 0.00 0.62 -13.13 87.21 15.71 238.61 0.3104 -835.0 -642.1


  • 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.
  • 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.