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3 The catalogue

The monthly mean and the smoothed monthly mean hemispheric Sunspot Numbers for the period 1975-2000 are compiled into a catalogue[*]. The catalogue is available online at cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsweb.u-strasbg.fr/cgi-bin/qcat?J/A+A/390/707. The organization of the catalogue is described in the following (for details see the ReadMe file).


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