Sunspot drawing of 1973-3-21

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https://doi.org/10.7891/e-manuscripta-97499



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1973-03-21
07:00
Hs 1304.5:5016
https://doi.org/10.7891/e-manuscripta-97499
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
74 18 D 14.6 224.0
1 18