Spatiotemporal Rainfall Distribution of Soan River Basin, Pothwar Region, Pakistan
Table 4
Monthly, seasonal, and annual rainfall statistic in zone-2 stations using Mann–Kendall test and Sen’s slope estimate.
Time series
Fatehjang
Kallar Syedan
Gujjar Khan
Mangla
Jhelum
Test Z
Q
Test Z
Q
Test Z
Q
Test Z
Q
Test Z
Q
JAN
0.83
0.312
0.00
0.000
−0.27
−0.107
0.91
0.069
1.09
0.578
FEB
0.12
0.211
1.56
1.450
0.65
0.444
2.78
0.987
0.25
0.167
MAR
−2.31
−2.519
−1.83+
−1.343
0.90
0.401
−0.29
−0.198
−0.61
−0.442
APR
−0.14
−0.120
−0.13
−0.148
0.63
0.383
0.44
0.191
0.23
0.067
MAY
−1.50
−0.735
−0.45
−0.166
0.29
0.092
0.99
0.256
0.30
0.136
JUN
1.54
1.873
1.18
1.635
2.44
1.368
2.27
1.189
0.89
0.717
JUL
0.87
1.966
1.49
3.241
0.74
0.840
1.34
1.298
−1.28
−1.885
AUG
0.53
0.855
−0.06
−0.081
0.19
0.295
1.01
1.121
1.48
3.000
SEP
−1.07
−0.904
−0.91
−0.624
0.42
0.326
0.16
0.081
1.28
1.100
OCT
0.28
0.000
−0.07
0.000
0.93
0.248
0.72
0.146
0.11
0.000
NOV
1.49
0.268
−1.25
−0.181
−1.36
−0.174
0.27
0.000
−0.18
0.000
DEC
−1.37
−0.538
−0.47
0.000
0.38
0.005
−1.06
0.000
−1.47
−0.450
Annual (J-D)
0.49
2.640
0.78
3.312
1.40
5.191
1.86+
5.035
0.75
2.986
Rabi (O-M)
−1.05
−2.183
−0.55
−0.643
0.56
0.490
1.57
1.672
−0.68
−0.671
Kharif (A-S)
0.73
3.714
1.49
5.005
1.69+
4.960
1.18
3.188
0.64
1.572
Winter (DJF)
0.28
0.596
0.86
1.065
−0.03
−0.021
1.83+
1.183
0.20
0.321
Premonsoon (MAM)
−1.48
−2.042
−1.23
−1.325
1.68+
1.139
0.21
0.18
−0.11
−0.088
Monsoon (JJAS)
1.09
4.047
1.76+
4.387
1.17
3.422
1.64
3.114
0.96
3.000
Postmonsoon (OND)
−0.43
−0.404
−0.71
−0.509
0.30
0.215
0.3
0.118
−1.32
−0.763
Values in bold showed a significant trend with Mann–Kendall (MK) test at three different confidence levels, i.e., represents trend at α = 0.01 level of significance, represents trend at α = 0.05 level of significance, and + represents trend at α = 0.1 level of significance. Negative sign of Z and Q test represents decreasing trend while positive sign represents increasing trend.
