A Comprehensive Method for Water Environment Assessment considering Trends of Water Quality

Table 4

The annual value for each river section.

	Measuring site	P1	P2	P3	P4
Qihe River	M1	0.28	0.28	0.18	0.26
Baihe River	M2	0.28	0.27	0.18	0.24
Duhe River	M3	0.29	0.30	0.22	0.29
Tianhe River	M4	0.55	0.34	0.35	0.34
Langhe River	M5	0.46	0.33	0.24	0.36
Shending River	M6	1.68	1.55	1.43	1.23
Sihe River	M7	1.99	1.45	1.66	0.76
Jianhe River	M8	0.84	0.55	0.34	0.51
Jiangjun River	M9	0.35	0.26	0.17	0.43
Taohe River	M10	0.49	0.37	0.27	0.29
Taogou River	M11	0.28	0.30	0.19	0.23
Quyuan River	M12	0.53	0.38	0.35	0.26
Xianghe River	M13	0.59	0.42	0.26	0.53
Laoguan River	M14	1.06	0.38	0.41	0.39
Guanshan River	M15	0.76	0.38	0.23	0.28
Jianghe River	M16	0.64	0.54	0.45	0.68