Sunspot drawing of 1971-4-6

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https://doi.org/10.7891/e-manuscripta-96648



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1971-04-06
07:30
Hs 1304.5:4422
https://doi.org/10.7891/e-manuscripta-96648
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
102 9 C -18.6 29.7
106 2 A 10.4 5.7
111 5 J 14.7 272.1
112 5 J -13.9 263.0
113 1 A -19.3 260.4
114 3 A 11.4 330.8
115 5 J -3.9 245.1
7 30