Sunspot drawing of 1971-10-6

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https://doi.org/10.7891/e-manuscripta-96713



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1971-10-06
13:45
Hs 1304.5:4592
https://doi.org/10.7891/e-manuscripta-96713
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
280 4 H -6.5 133.3
282 9 C 10.5 78.3
283 4 B -8.8 71.7
284 1 A 17.6 100.1
4 18