Sunspot drawing of 1973-6-27

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https://doi.org/10.7891/e-manuscripta-97515



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1973-06-27
06:30
Hs 1304.5:5103
https://doi.org/10.7891/e-manuscripta-97515
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
142 17 H -7.9 66.5
143 7 C -2.9 52.5
145 11 B -12.8 43.0
3 35