Table 4: The trend analysis of SSI in different stations over the studied period (1985-2014).

		June			July			August
No. of Stations	Synoptic Stations	pa	Trend	Sen's Slope	p	Trend	Sen's Slope	p	Trend	Sen's Slope
1	Ahar	0.15	Ub	0.91	0.41	Dc	-0.07	0.38	U	0.21
2	Ahvaz	< 0.001	U	1.36	0.01	U	1.04	0.05	U	1.08
3	Anzali	0.14	U	0.87	0.11	U	0.91	0.01	U	1.63
4	Arak	< 0.001	U	3.35	0.005	D	-1.23	0.001	D	-3.08
5	Ardebil	0.01	U	1.9	0.003	U	2.05	< 0.001	U	3.14
6	Babolsar	0.11	U	0.87	0.13	U	0.63	0.01	U	1.33
7	Bam	0.32	U	0.22	0.45	U	0.07	0.19	U	0.59
8	Bandarabbas	0.12	U	0.36	0.04	U	0.52	0.37	U	0.12
9	Birjand	0.03	U	0.88	0.12	U	0.63	0.06	U	0.86
10	Bushehr	< 0.001	U	1.41	0.20	U	0.32	0.02	U	1.35
11	Chahbahar	0.33	D	-0.13	0.11	D	-0.51	0.20	U	0.48
12	Darab	0.19	U	0.45	0.47	D	-0.08	0.42	D	-0.10
13	Fasa	0.003	U	1.65	0.07	U	0.50	0.41	U	0.06
14	Gorgan	0.06	U	0.98	0.01	U	1.05	0.005	U	1.45
15	Hamedan	0.02	U	0.83	0.06	U	0.51	0.09	U	0.70
16	Karaj	0.42	U	0.12	0.50	U	0.01	0.42	U	0.17
17	Kashan	0.30	U	0.22	0.22	U	0.33	0.50	U	-0.02
18	Kermanshah	0.001	U	1.35	0.38	U	0.17	0.08	U	0.70
19	Mahabad	0.007	U	1.21	0.02	U	0.70	0.004	U	1.12
20	Maku	0.07	U	1.21	0.27	U	0.41	0.07	U	0.92
21	Maragheh	0.001	U	1.83	0.003	U	1.14	< 0.001	U	1.65
22	Mashhad	0.15	U	0.50	0.34	U	0.19	0.07	U	0.70
23	Qazvin	0.014	U	1.03	0.01	U	0.81	0.04	U	0.72
24	Qom	0.10	U	1.15	0.04	U	1.31	0.36	D	-0.41
25	Rasht	0.33	U	0.53	0.14	U	0.63	0.027	U	1.55
26	Sabzevar	0.34	D	-0.11	0.14	D	-0.42	0.38	D	-0.17
27	Sanandaj	0.001	U	1.60	0.34	D	-0.08	0.03	U	0.67
28	Saqez	0.40	U	0.25	0.15	D	-0.69	0.42	U	0.12
29	Semnan	0.08	U	0.71	0.10	U	0.57	0.48	U	0.03
30	Shahrekord	0.33	U	0.11	0.18	D	-0.23	0.02	D	-0.88
31	Shahroud	0.07	U	0.71	0.05	U	0.97	0.06	U	0.64
32	Shiraz	0.44	U	0.11	0.30	U	0.22	0.44	D	-0.08
33	Tehran	0.36	U	0.06	0.41	D	-0.09	0.41	D	-0.28
34	Torbat Heydariyeh	0.20	U	0.38	0.13	U	0.41	0.06	U	0.84
35	Urmia	0.007	U	1.47	0.06	U	0.70	0.02	U	1
36	Yasuj	0.22	D	-0.29	0.18	D	-0.31	0.05	D	-0.49
37	Yazd	0.40	D	-0.05	0.32	U	0.28	0.41	U	0.19
38	Zabol	0.14	D	-0.47	0.06	D	-0.72	0.36	D	-0.24
39	Zahedan	0.33	U	0.09	0.50	-	0	0.11	U	0.56
40	Zanjan	0.02	U	1.57	< 0.001	U	1.54	< 0.001	U	2.10