Sunspot drawing of 1987-9-16

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https://doi.org/10.7891/e-manuscripta-142867



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1987-09-16
07:00
Hs 1304.6:2018
https://doi.org/10.7891/e-manuscripta-142867
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
96 1 1 A 27 249
97 8 10 C -32 227
99 3 2 B 19 216
3 12 13