Sunspot drawing of 1987-3-4

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https://doi.org/10.7891/e-manuscripta-143003



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1987-03-04
08:30
Hs 1304.6:1841
https://doi.org/10.7891/e-manuscripta-143003
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
12 2 5 J 38 309
16 3 3 B 6 284
2 5 8