Sunspot drawing of 1973-6-21

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https://doi.org/10.7891/e-manuscripta-97352



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1973-06-21
06:30
Hs 1304.5:5098
https://doi.org/10.7891/e-manuscripta-97352
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
135 24 12 B 10.8 149.4
142 37 27 D -7.9 65.5
143 17 23 D -3.3 51.7
144 3 3 A 6.4 153.1
145 9 10 B -12.4 38.1
5 90 75