Sunspot drawing of 1987-2-14

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https://doi.org/10.7891/e-manuscripta-142967



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1987-02-14
09:00
Hs 1304.6:1828
https://doi.org/10.7891/e-manuscripta-142967
Observer : Marco Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
10 3 3 B 17 165
1 3 3