# sunspots

0th

Percentile

##### Monthly Sunspot Numbers, 1749--1983

Monthly mean relative sunspot numbers from 1749 to 1983. Collected at Swiss Federal Observatory, Zurich until 1960, then Tokyo Astronomical Observatory.

Keywords
datasets
##### Usage
sunspots
##### Format

A time series of monthly data from 1749 to 1983.

##### Source

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

sunspot.month has a longer (and a bit different) series, sunspot.year is a much shorter one. See there for getting more current sunspot numbers.
library(datasets) require(graphics) plot(sunspots, main = "sunspots data", xlab = "Year", ylab = "Monthly sunspot numbers")