datasets (version 3.2.4)

treering: Yearly Treering Data, -6000--1979

Description

Contains normalized tree-ring widths in dimensionless units.

Usage

treering

Arguments

Format

A univariate time series with 7981 observations. The object is of class "ts". Each tree ring corresponds to one year.

Source

Time Series Data Library: http://www-personal.buseco.monash.edu.au/~hyndman/TSDL/, series ‘CA535.DAT

Details

The data were recorded by Donald A. Graybill, 1980, from Gt Basin Bristlecone Pine 2805M, 3726-11810 in Methuselah Walk, California.

References

For some photos of Methuselah Walk see http://www.ltrr.arizona.edu/~hallman/sitephotos/meth.html