Sunspot drawing of 1973-10-18

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https://doi.org/10.7891/e-manuscripta-97373



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1973-10-18
08:30
Hs 1304.5:5204
https://doi.org/10.7891/e-manuscripta-97373
Observer : Sergio Cortesi
Seeing (SIDC) : 2
Group Not Weighted Weighted Type Latitude Carrington Longit.
206 4 A 14.1 43.5
207 3 A -3.8 36.6
2 7