Sunspot drawing of 1973-6-18

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https://doi.org/10.7891/e-manuscripta-97423



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1973-06-18
07:00
Hs 1304.5:5096
https://doi.org/10.7891/e-manuscripta-97423
Observer : Sergio Cortesi
Seeing (SIDC) : 2
Group Not Weighted Weighted Type Latitude Carrington Longit.
135 17 B 11.3 147.9
1 17