Sunspot drawing of 1984-4-17

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https://doi.org/10.7891/e-manuscripta-141004



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1984-04-17
07:15
Hs 1304.6:987
https://doi.org/10.7891/e-manuscripta-141004
Observer : Marco Cortesi
Seeing (SIDC) : 2
Group Not Weighted Weighted Type Latitude Carrington Longit.
101 13 30 D 8 142
102 1 2 A -20 152
103 12 20 D -16 82
3 26 52