Sunspot drawing of 1974-7-6

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https://doi.org/10.7891/e-manuscripta-97743



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1974-07-06
07:30
Hs 1304.5:5415
https://doi.org/10.7891/e-manuscripta-97743
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
99 17 B -12.7 172.6
100 80 F -15.4 156.3
101 12 C -10.0 203.8
102 20 C -14.2 128.0
4 129