Sunspot drawing of 1961-9-1

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https://doi.org/10.7891/e-manuscripta-92778



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1961-09-01
07:15
Hs 1304.5:1451
https://doi.org/10.7891/e-manuscripta-92778
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
254 4 4 B 17.4 203.8
260 91 52 E 12.9 78.1
2 95 56