Sunspot drawing of 1987-4-10

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https://doi.org/10.7891/e-manuscripta-143049



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1987-04-10
12:30
Hs 1304.6:1873
https://doi.org/10.7891/e-manuscripta-143049
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
25 11 24 D -23 180
26 24 36 D -30 133
27 2 4 J -32 141
29 14 23 C -5 124
30 3 2 A -6 115
5 54 89