Table 3: Lag-1 serial correlation values for temperature variables before and after prewhitening.

Station Critical
NE SW NE SW

90.370.48*−0.010.58*−0.020.36−0.030.55*−0.050.45*0.34
100.310.37*0.080.020.120.17−0.090.42*0.04
110.300.39*0.020.75*0.070.150.160.160.02

Significant at the 5% significance level.
—No need to follow TFPW process.