Sunspot drawing of 1972-9-17

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https://doi.org/10.7891/e-manuscripta-97120



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1972-09-17
07:00
Hs 1304.5:4866
https://doi.org/10.7891/e-manuscripta-97120
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
307 3 J 19.8 243.0
308 5 C -12.8 186.6
310 8 C -9.1 163.7
311 5 B 6.9 153.2
312 2 B 12.3 137.2
313 1 A -11.3 119.0
314 5 J -15.3 78.5
7 29