Sunspot drawing of 1987-2-22

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https://doi.org/10.7891/e-manuscripta-142835



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1987-02-22
09:30
Hs 1304.6:1832
https://doi.org/10.7891/e-manuscripta-142835
Observer : Marco Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
11 1 1 A -23 23
1 1 1