Sunspot drawing of 1987-7-23

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https://doi.org/10.7891/e-manuscripta-142944



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1987-07-23
11:45
Hs 1304.6:1964
https://doi.org/10.7891/e-manuscripta-142944
Observer : Michele Bianda
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
68 6 13 J -31 241
69 24 30 D -28 255
70 10 22 D -23 184
71 2 2 A 21 253
72 6 11 C -19 226
73 2 3 A -20 197
74 2 10 D 29 147
7 52 91