out = treering () ¶Yearly Treering Data, -6000-1979
Contains normalized tree-ring widths in dimensionless units.
A univariate time series with 7981 observations.
Each tree ring corresponds to one year.
The data were recorded by Donald A. Graybill, 1980, from Gt Basin Bristlecone Pine 2805M, 3726-11810 in Methuselah Walk, California.
Time Series Data Library: http://www-personal.buseco.monash.edu.au/~hyndman/TSDL/, series ‘CA535.DAT’.
For some photos of Methuselah Walk see https://web.archive.org/web/20110523225828/http://www.ltrr.arizona.edu/~hallman/sitephotos/meth.html.
t = octave.dataset.treering;