Hemispheric Sunspot Numbers Rn and Rs from 1945-2004:
extended and improved catalogue
M. Temmer (1),
J. Rybák (2),
P. Bendik (2),
A. Veronig (1),
F. Vogler (1),
W. Otruba (1),
W. Potzi (1),
A. Hanslmeier (1)
1 - Institut for Geophysics, Astrophysics and Meteorology, Universitätsplatz 5, A-8010 Graz, Austria
2 - Astronomical Institute, Slovak Academy of Sciences, SK-05960 Tatranská Lomnica, Slovakia
We present the extended and improved catalogue of hemispheric Sunspot
Numbers Rn and Rs covering the time span 1945-2004. The data set is based on
sunspot drawings from the Kanzelohe Solar Observatory (KSO) and the Skalnat
e Pleso Observatory (SPO). Results from a cross-validation with the
international hemispheric sunspot numbers provided by the Sunspot Index Data
Center and available for the time span 1992{2004, con rm the high quality of
the merged data set compared to the original catalogue based solely on KSO
data (Temmer et al. 2002). The application of the data is presented for
investigations concerning possible N-S asymmetries including solar cycles
18-23.
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