Table 2 Average seasonal results in 2019. Distances refers to measures from the source to the mouth of the Piabanha River. Station 9 is located on the Paquequer/Preto river. Abbreviations, units, methods, quantification limits and permissible limits to rivers class 2 are described in Table 1. The entire dataset can be found online as Supplementary Table S2.

From: Water quality assessment based on multivariate statistics and water quality index of a strategic river in the Brazilian Atlantic Forest

Dist (km)	Station	Season	DO	Water temp	E. coli	pH	BOD	NO₃⁻	PO₄³⁻	Turb	TDS	WQI_NSF	SS	Alcal	COD	TP	NH₃	TN
12	1	Dry	7.71	21.04	7467	7.26	22.67	1.00	0.58	4.72	173	52.03	26	67	59.33	0.83	8.00	8.97
12	1	Wet	8.72	21.79	3673	6.73	3.33	1.00	0.43	5.85	158	62.77	10	57	16.33	0.74	5.92	6.73
15	2	Dry	7.83	20.42	67,867	7.38	10.67	1.16	0.83	8.26	167	55.77	14	77	31.00	1.21	9.75	12.00
15	2	Wet	5.84	22.07	16,327	6.79	8.33	1.02	0.61	5.64	168	54.03	11	60	28.00	0.99	6.00	8.33
29	3	Dry	7.70	20.60	67,100	7.15	5.33	1.16	0.51	5.05	138	65.60	7	46	14.67	0.78	6.43	8.33
29	3	Wet	6.47	21.87	7800	6.91	6.33	1.00	0.33	5.06	134	66.63	10	47	25.67	0.56	4.75	6.00
33	4	Dry	8.13	19.75	9500	7.40	13.00	1.05	0.41	10.47	118	52.63	26	45	36.33	0.63	4.53	6.53
33	4	Wet	5.76	23.06	9007	7.01	5.67	1.00	0.19	13.31	96	60.17	15	38	25.33	0.41	2.67	4.23
52	5	Dry	8.31	19.31	3834	7.22	7.00	3.97	0.42	6.32	135	68.90	10	33	21.67	0.65	1.72	7.53
52	5	Wet	6.69	24.29	10,367	7.02	7.00	2.22	0.18	34.93	86	57.37	41	20	30.67	0.44	1.01	5.27
58	6	Dry	8.01	19.90	4467	7.93	3.33	2.92	0.16	10.77	84	62.30	8	21	12.33	0.31	0.53	4.83
58	6	Wet	6.84	24.89	5100	6.95	7.67	1.72	0.09	62.47	73	56.80	48	18	29.00	0.21	0.41	2.70
70	7	Dry	7.52	20.84	714	7.39	3.67	3.42	0.16	11.82	91	72.10	10	20	13.33	0.28	0.19	5.07
70	7	Wet	6.75	24.59	4490	7.06	6.33	2.07	0.07	145.20	65	58.27	69	17	29.67	0.24	0.11	3.23
79	8	Dry	7.72	20.41	270	7.39	3.33	3.23	0.15	9.44	90	73.27	7	22	11.33	0.26	0.08	3.70
79	8	Wet	6.81	24.59	627	7.07	5.67	2.23	0.09	45.60	64	66.93	32	18	22.67	0.25	0.11	4.00
–	9	Dry	9.04	17.75	1113	7.33	4.00	3.25	0.14	6.54	105	68.53	8	25	14.33	0.33	1.32	6.57
–	9	Wet	5.91	22.37	10,967	7.15	15.00	2.01	0.05	34.53	72	51.63	51	22	48.33	0.30	0.67	4.23
Mean (n = 54)			7.32	21.64	12,816	7.17	7.69	1.97	0.30	23.67	112	61.43	22	36	26.11	0.52	3.01	6.01
Standard deviation			1.61	2.79	37,759	0.60	7.52	1.12	0.24	49.47	47	11.02	30	21	21.65	0.33	3.13	2.53
Maximum			11.72	26.12	200,000	8.75	45.00	4.44	0.93	330.00	248	88.10	147	91	114.00	1.65	10.00	13.00
Minimum			3.40	15.59	1	6.11	2.00	1.00	0.03	3.58	43	33.70	1	10	10.00	0.15	0.06	2.00

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