Sunspot drawing of 1987-2-15

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https://doi.org/10.7891/e-manuscripta-142772



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1987-02-15
15:45
Hs 1304.6:1829
https://doi.org/10.7891/e-manuscripta-142772
Observer : Marco Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
10 4 5 B 18 165
1 4 5