Sunspot drawing of 1987-3-19

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https://doi.org/10.7891/e-manuscripta-142778



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1987-03-19
09:30
Hs 1304.6:1856
https://doi.org/10.7891/e-manuscripta-142778
Observer : Marco Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
17 2 3 A -32 75
19 1 1 A -19 125
2 3 4