Sunspot drawing of 1987-3-30

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https://doi.org/10.7891/e-manuscripta-142996



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1987-03-30
07:30
Hs 1304.6:1866
https://doi.org/10.7891/e-manuscripta-142996
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
22 6 9 C 3 295
1 6 9