Ref: DATASET-2023-0001

Hemispheric Sunspot Numbers 1874-2020 (VizieR Online Data Catalog)

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
Links: link

The record appears in these collections:
Royal Observatory of Belgium > Solar Physics & Space Weather (SIDC)
Solar-Terrestrial Centre of Excellence

 Record created 2023-01-06, last modified 2023-01-06