Sunspot drawing of 1983-3-31

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https://doi.org/10.7891/e-manuscripta-140420



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1983-03-31
09:30
Hs 1304.6:666
https://doi.org/10.7891/e-manuscripta-140420
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
74 6 3 B -11 145
78 6 13 D -17 128
79 2 2 A -22 123
83 1 1 A -22 153
4 15 19