Table 6.

Mean ± standard deviation of physicochemical variables at sites S1 to S5

	S1	S2	S3	S4	S5
DO (% saturation)	104.5 ± 7.90	100 ± 8.62	102.8 ± 10.34	100.8 ± 9.85	100.1 ± 12.03
pH (pH units)	8.0 ± 0.44	7.8 ± 0.29	8.1 ± 0.22	8.1 ± 0.26	8.1 ± 0.20
Temperature (°C)	9.7 ± 3.32	9.6 ± 3.26	10.7 ± 4.06	10.3 ± 4.13	10.3 ± 4.29
Conductivity (μS cm−1)	484 ± 129.92	559.7 ± 143.95	650.3 ± 149.80	684.5 ± 153.72	693.7 ± 154.61
Suspended solids (mg L−1)	4.2 ± 6.20	6.0 ± 5.77	11.6 ± 14.70	15.0 ± 26.68	12.1 ± 19.78
Discharge (m3 s−1)	0.15 ± 0.12	0.23 ± 0.18	0.43 ± 0.34	0.53 ± 0.41	0.53 ± 0.41
BOD5 (mg L−1)	2.0 ± 2.83	2.3 ± 2.62	2.9 ± 3.02	3.3 ± 3.20	2.3 ± 1.32
NH3-N (mg L−1)	0.4 ± 0.55	0.5 ± 0.52	0.6 ± 0.58	0.5 ± 0.51	0.5 ± 0.58
NO3-N (mg L−1)	0.9 ± 1.09	1.1 ± 1.17	4.0 ± 3.04	4.3 ± 2.54	4.1 ± 2.27
PO4-P (mg L−1)	0.1 ± 16	0.1 ± 0.25	0.6 ± 0.42	0.5 ± 0.34	0.5 ± 0.31