Sunspot drawing of 1971-8-13

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https://doi.org/10.7891/e-manuscripta-96873



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1971-08-13
08:00
Hs 1304.5:4540
https://doi.org/10.7891/e-manuscripta-96873
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
240 9 J -7.8 98.6
241 4 C 12.0 123.2
242 7 B -12.2 88.8
246 2 A 20.4 42.5
247 5 J 13.0 353.9
249 3 A 12.9 37.1
250 2 A 9.3 4.8
7 32