Sunspot drawing of 1977-7-4

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https://doi.org/10.7891/e-manuscripta-98878



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1977-07-04
07:00
Hs 1304.5:6329
https://doi.org/10.7891/e-manuscripta-98878
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
60 12 H 13.4 146.4
64 28 D 38.6 132.4
66 2 A 18.1 32.1
3 42