Monthly Mean Relative Sunspot Numbers

Description

Zurich monthly sunspot numbers from 1749 to 1983.

Usage

data(sunspots)

Format

A time series of 229 cases (years from 1749 to 1983) on 12 variables (the mean relative sunspot numbers in the months January to December). The last case is incomplete.

Source

D. F. Andrews and A. M. Herzberg (1985). Data: A Collection of Problems from Many Fields for the Student and Research Worker. New York: Springer-Verlag.