Dataset:  argentine_wheat.dat

Source: N.A. Hessling (1922). "Relations Between the Weather and the Yield
of Wheat in the Argentine Republic," Monthly Weather Review, June 1922,
pp. 302-308.

Description: Annual Wheat Yield for Years 1890-1919 for Argentine,
Rainfall (June-November) and Temperature (August-November, in deviations
from the mean). 

Variables/Columns
Year   5-8
Wheat Yield   10-16   /*  kg/hectare  */
Rainfall    17-24    /* mm June-Nov   */
Temperature  25-32  /*  Deviation from mean, Celsius, Aug-Nov  */