Sunspot drawing of 1971-9-28

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https://doi.org/10.7891/e-manuscripta-96652



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1971-09-28
14:30
Hs 1304.5:4584
https://doi.org/10.7891/e-manuscripta-96652
Observer : Araldo Pittini
Seeing (SIDC) : 2
Group Not Weighted Weighted Type Latitude Carrington Longit.
278 11 C -14.1 190.5
280 5 H -6.8 132.5
281 18 C -5.4 119.5
282 11 D 11.3 78.5
4 45