Veronig, A. M. ; Jain, S. ; Podladchikova, T. ; Poetzi, W. ; Clette, F.

Dataset released under the open data policy

Abstract: Reconstructed hemispheric sunspot numbers, back to 1874, based on the SILSO international sunspot number and the Greenwich Royal Observatory photographic catalogue.

DOI: 10.26093/cds/vizier.36520056
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