Spatio-Temporal Rainfall Variability and Concentration over Sri Lanka

Table 6

Result of trends and percent change in PCI during 1990–2019

Stations	Annual			SWMS			NEMS
	MK	SS	Change	MK	SS	Change	MK	SS	Change
	Z	β	%	Z	β	%	Z	β	%
Jaffna	0.32	0.02	2.16	0.63	0.04	7.04	0.72	0.12	23.09
Vavuniya	0.65	0.05	9.41	2.21	0.18	33.64	0.45	0.04	8.81
Trincomalee	0.93	0.01	1.56	2.20	0.16	31.26	−0.59	−0.07	−15.02
Puttalam	0.50	0.05	8.60	0.64	0.09	14.56	0.50	0.05	10.90
Mahailluppallama	−0.09	0.00	0.00	0.00	0.00	0.00	0.54	0.04	9.39
Parakrama Samudraya	−0.04	0.02	3.39	0.52	0.04	6.96	0.00	0.02	4.92
Batticaloa	0.00	0.00	0.00	1.69	0.09	18.79	0.16	0.01	2.41
Kurunegala	0.42	0.02	4.25	−0.84	−0.05	−12.36	0.52	0.03	6.54
Katugastota	2.17	0.09	21.39	−0.35	0.00	0.00	1.81	0.12	29.70
Badulla	0.64	0.04	8.76	0.51	0.02	4.58	0.00	0.00	0.00
Colombo	0.02	0.00	0.00	0.22	0.01	2.51	−0.65	−0.02	−4.94
Ratnapura	−0.03	0.01	2.77	0.57	0.01	3.06	1.40	0.05	13.69
Wellawaya	1.76	0.09	17.60	1.55	0.07	13.63	0.50	0.04	10.02
Galle	−1.50	−0.05	−11.91	−1.30	−0.04	−10.95	0.56	0.04	9.87
Hambantota	−0.23	−0.02	−3.84	1.48	0.10	21.27	1.43	0.08	18.27

Values in bold (Italic) are statistically significant at 0.05 (0.10) significance level.