Sunspot drawing of 1987-8-25

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https://doi.org/10.7891/e-manuscripta-142979



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1987-08-25
13:00
Hs 1304.6:1996
https://doi.org/10.7891/e-manuscripta-142979
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
88 11 19 C 16 123
89 9 19 B 19 209
2 20 38