Sunspot drawing of 2019-5-9

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https://doi.org/10.7891/e-manuscripta-160480



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2019-05-09
07:30
Hs 1304.6:11515
https://doi.org/10.7891/e-manuscripta-160480
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
15 5 9 C 7.7 307.2
16 2 4 H 5.6 270.7
2 7 13