Sunspot drawing of 1975-3-19

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https://doi.org/10.7891/e-manuscripta-98255



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1975-03-19
14:00
Hs 1304.5:5631
https://doi.org/10.7891/e-manuscripta-98255
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
30 10 B -14.3 54.0
31 1 A 6.4 30.8
2 11