Sunspot drawing of 1988-6-21

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https://doi.org/10.7891/e-manuscripta-143882



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1988-06-21
07:00
Hs 1304.6:2235
https://doi.org/10.7891/e-manuscripta-143882
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
129 33 46 D -16 151
130 2 6 C 37 145
134 20 20 C 34 160
135 1 3 J -21 98
136 9 11 B -26 118
137 1 1 A -23 87
6 66 87