Sunspot drawing of 1973-6-28

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https://doi.org/10.7891/e-manuscripta-97574



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1973-06-28
09:15
Hs 1304.5:5104
https://doi.org/10.7891/e-manuscripta-97574
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
142 16 J -8.2 66.5
143 5 A -2.5 53.9
145 6 B -12.6 44.9
146 2 B -5.8 2.5
4 29