Sunspot drawing of 1973-6-17

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https://doi.org/10.7891/e-manuscripta-97501



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1973-06-17
07:00
Hs 1304.5:5095
https://doi.org/10.7891/e-manuscripta-97501
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
131 1 2 A 15.9 209.5
135 37 13 B 12.3 148.5
140 1 1 A -14.3 183.9
141 2 1 A 7.3 199.6
4 41 17