Sunspot drawing of 1972-9-20

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https://doi.org/10.7891/e-manuscripta-97247



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1972-09-20
08:00
Hs 1304.5:4869
https://doi.org/10.7891/e-manuscripta-97247
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
310 1 2 A -8.2 166.2
311 8 6 B 7.1 152.4
313 7 5 B -10.8 115.9
314 2 4 J -16.0 79.1
316 5 11 D -6.3 36.9
5 23 28