Identification of Variations in the Climatic Conditions of the Lerma-Chapala-Santiago Watershed by Comparative Analysis of Time Series

Table 3

Absolute, relative, and proportional areas of the Lerma-Chapala-Santiago watershed with changes in thermal oscillation between time series one (1960–2010) and time series two (1960–1989).

No.	Series 1: 1960–2010	Series 2: 1960–1989	Tendency	Surface area with changes		Percentage area of the watershed
				km^2	%
1	Low oscillation	Extreme oscillation	↑	4,391.8	78.7	3.28
2	Low oscillation	Isothermal	↓	13.7	0.2	0.01
3	Extreme oscillation	Low oscillation	↓	560.0	10.0	0.42
4	Isothermal	Low oscillation	↑	616.2	11.0	0.46
			Total	5,581.7	100	4.17