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Sleuth2 (version 2.0-7)

ex1509: Sunspot Counts for 1749--1948

Description

Time series data set of annual counts of sunspots.

Usage

ex1509

Arguments

Format

A data frame with 200 observations on the following 2 variables.

Year

year

Spots

number of sunspots

References

Waldmeier, M. (1961). The Sunspot Activity in the Years 1610--1960, Federal Observatory, Zurich.

Examples

Run this code
str(ex1509)

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