Sunspot drawing of 1991-4-1

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https://doi.org/10.7891/e-manuscripta-145845



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1991-04-01
08:30
Hs 1304.6:3116
https://doi.org/10.7891/e-manuscripta-145845
Observer : Andrea Manna
Seeing (SIDC) : 2
Group Not Weighted Weighted Type Latitude Carrington Longit.
141 1 2 A -15 140
144 40 38 D 15 57
145 20 30 D -9 55
146A 2 1 A -15 39
150 14 19 D 11 27
5 77 90