Table 2.

One-way ANOVA test for drought and flood years (a: premonsoon (Pre), b: monsoon (Mon), c: postmonsoon (Post), Dr: Drought years, and Fl: Flood years).

Year	Parameters	Seasonal averages			Variance test					Post-hoc Comparison
		Pre (a)	Mon (b)	Post (c)	SS	ν	MS	F-value	p-value	Tukey test
Dr	BOD	1.09	1.32	1.19	0.027	2	0.013	0.763	0.472	a = b = c
	COD	2.64	3.18	3.04	0.057	2	0.029	5.201	0.009b	a < b (b = c)
	TOC	1.88	2.29	2.13	0.043	2	0.022	4.832	0.014c	a < c (a = b, c = b)
	TN	0.62	1.03	0.83	0.43	2	0.215	9.72	0.0003a	a < b (b = c)
	TP	15.2	26.7	20.7	0.407	2	0.203	6.673	0.003b	a < b (b = c)
	TN:TP	43.1	47.1	42.1	0.11	2	0.055	1.666	0.199	a = b = c
	WT	15.1	19.9	19.5	0.166	2	0.083	12.38	< 0.001a	a < b (b = c)
	EC	128	126	95	0.102	2	0.051	1.431	0.248	a = b = c
	CHL-a	3.46	5.40	6.54	0.399	2	0.19	2.586	0.085	a = b = c
	SS	1.70	2.66	2.90	0.353	2	0.177	5.717	0.006b	a < b (b = c)
	SD	2.50	3.04	2.46	0.097	2	0.049	2.535	0.089	a = b = c
	CHL-a:TP	0.243	0.236	0.327	0.204	2	0.102	1.32	0.276	a = b = c
Fl	BOD	1.13	1.18	1.13	0.008	2	0.004	0.153	0.858	a = b = c
	COD	2.74	3.09	3.02	0.023	2	0.011	2.784	0.071	a = b = c
	TOC	1.65	2.15	1.94	0.049	2	0.025	4.211	0.029c	a < c (a = b, c = b)
	TN	0.96	1.00	0.93	0.016	2	0.008	0.515	0.601	a = b = c
	TP	17.7	26.1	24.8	0.52	2	0.265	4.52	0.016c	a < c (a = b, c = b)
	TN:TP	83.4	43.9	44.3	0.446	2	0.223	4.011	0.024c	c < b (a = b, a = c)
	WT	15.3	20.6	20.7	0.222	2	0.111	22.41	< 0.001a	a < b (b = c)
	EC	89	105	83	0.071	2	0.036	1.89	0.162	a = b = c
	CHL-a	4.46	7.10	20.2	2.332	2	1.166	4.898	0.011c	a < c (a = b, c = b)
	SS	2.83	3.61	5.41	0.654	2	0.327	3.018	0.058	a = b = c
	SD	3.13	1.89	2.09	0.391	2	0.196	4.23	0.02c	b < a (a = c, b = c)
	CHL-a:TP	0.221	0.305	0.718	0.97	2	0.485	3.062	0.056	a < c (a = b, c = b)

SS: sum of squares; ν: degrees of freedom; MS – mean square; Significance level.

^aVery strong.

^bStrong.

^cModerate.