Sunspot drawing of 1972-9-18

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https://doi.org/10.7891/e-manuscripta-97159



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1972-09-18
11:00
Hs 1304.5:4867
https://doi.org/10.7891/e-manuscripta-97159
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
308 3 A -11.6 188.1
310 4 J -8.4 165.1
311 1 A 6.3 154.4
314 3 J -15.2 78.6
315 4 A 13.9 173.5
5 15