Sunspot drawing of 1987-3-6

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https://doi.org/10.7891/e-manuscripta-142776



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1987-03-06
09:15
Hs 1304.6:1843
https://doi.org/10.7891/e-manuscripta-142776
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
12 1 1 A 38 307
16 23 27 C 6 285
2 24 28