Sunspot drawing of 1988-2-15

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https://doi.org/10.7891/e-manuscripta-143743



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1988-02-15
08:00
Hs 1304.6:2125
https://doi.org/10.7891/e-manuscripta-143743
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
32 1 10 H 21 328
33 3 8 C -16 316
34 3 7 C 19 315
3 7 25