Sunspot drawing of 2019-3-30

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https://doi.org/10.7891/e-manuscripta-160381



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2019-03-30
09:30
Hs 1304.6:11481
https://doi.org/10.7891/e-manuscripta-160381
Observer : Marco Cagnotti
Seeing (SIDC) : 5
No group