Sunspot drawing of 1987-12-19

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https://doi.org/10.7891/e-manuscripta-142788



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1987-12-19
10:00
Hs 1304.6:2082
https://doi.org/10.7891/e-manuscripta-142788
Observer : Sergio Cortesi
Seeing (SIDC) : 1
Group Not Weighted Weighted Type Latitude Carrington Longit.
146 1 2 A -24 100
147 2 6 J -32 64
151 2 6 C 23 14
3 5 14