Sunspot drawing of 1988-2-28

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https://doi.org/10.7891/e-manuscripta-143848



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1988-02-28
10:00
Hs 1304.6:2138
https://doi.org/10.7891/e-manuscripta-143848
Observer : Marco Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
42 2 4 B 20 152
43 2 2 A 29 170
44 7 16 D 17 144
45 2 2 A -23 277
46 5 5 A -21 163
5 18 29