Variable Modes 1901-1930 1931-1960 1961-1990 1991-2010
Rainfall PC-1 59.1 62.3 63.2 60.2
PC-2 32.8 31.7 31.9 31.0
Discharge PC-1 69.3 69.6 76.1 75.5
PC-2 27.4 27.2 21.4 22.8