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Table 4

The Pettitt test results for the annual hydroclimatic variables in Lighvan basin

VariableKP-valueChange point (year)Mean of 1st periodMean of 2nd period
Q-Hervy (cms) 312 0.0004++ 1995 0.714 0.460 
Q-Lighvan (cms) 110 0.934 – – – 
P (mm) 206 0.049+ 2001 313.5 389.8 
Tmean (°C) 241 0.014+ 1998 6.4 7.5 
Tmax (°C) 256 0.007++ 1993 12.5 14 
Tmin (°C) 238 0.016+ 1998 0.1 1.2 
Tmax-Tmin (°C) 234 0.016+ 1978 10.9 13.1 
RH (%) 244 0.012+ 2002 60.6 53.5 
Snow (mm) 142 0.34 – – – 
VariableKP-valueChange point (year)Mean of 1st periodMean of 2nd period
Q-Hervy (cms) 312 0.0004++ 1995 0.714 0.460 
Q-Lighvan (cms) 110 0.934 – – – 
P (mm) 206 0.049+ 2001 313.5 389.8 
Tmean (°C) 241 0.014+ 1998 6.4 7.5 
Tmax (°C) 256 0.007++ 1993 12.5 14 
Tmin (°C) 238 0.016+ 1998 0.1 1.2 
Tmax-Tmin (°C) 234 0.016+ 1978 10.9 13.1 
RH (%) 244 0.012+ 2002 60.6 53.5 
Snow (mm) 142 0.34 – – – 

Note: Numbers with + and ++ signs are significant at 5% and 1%, respectively. Q, P, T, RH, and Snow are streamflow, precipitation, temperature, relative humidity, and sum of snowfall in year, respectively. K is change point calculated, and Change point is time of rapid change in series. Mean of 1st period and Mean of 2nd period is mean of variable in the first and second period, respectively.

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