Sunspot drawing of 1973-10-17

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https://doi.org/10.7891/e-manuscripta-97505



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1973-10-17
07:30
Hs 1304.5:5203
https://doi.org/10.7891/e-manuscripta-97505
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
206 7 B 12.8 45.2
207 5 B -4.3 33.9
2 12