Sunspot drawing of 1987-8-1

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https://doi.org/10.7891/e-manuscripta-142885



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1987-08-01
07:00
Hs 1304.6:1973
https://doi.org/10.7891/e-manuscripta-142885
Observer : Marco Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
70 3 2 A -21 178
74 7 10 C 29 142
76 4 3 B 20 150
77 14 21 C 15 121
4 28 36