Sunspot drawing of 1986-7-21

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https://doi.org/10.7891/e-manuscripta-142133



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1986-07-21
07:15
Hs 1304.6:1651
https://doi.org/10.7891/e-manuscripta-142133
Observer : Sergio Cortesi
Seeing (SIDC) : 5
Group Not Weighted Weighted Type Latitude Carrington Longit.
41 6 6 B 8 36
43 4 3 B 7 28
44 5 6 B 8 349
3 15 15