Table5.

Fitted parameters and goodness of fit indicators for the Logistic velocity profile model for both PVC90 and PVC63 untreated pipes.

	Test	Re	K	u*	Vmax	R2	MAE		RMSE
							(m/s)	%	(m/s)	%
PVC90	1	2.54E+04	− 0.04	0.0	0.35	0.63	0.0322	10.63	0.0034	12.06
	2	2.96E+04	− 0.05	0.0	0.40	0.68	0.0354	10.01	0.0048	11.68
	3	3.85E+04	− 0.08	0.0	0.54	0.99	0.0336	7.31	0.0061	9.46
	4	4.48E+04	− 0.07	0.0	0.60	0.94	0.0302	5.64	0.0076	7.48
	5	4.93E+04	− 0.09	0.0	0.67	0.97	0.0366	6.23	0.0099	8.04
	6	5.66E+04	− 0.09	0.0	0.76	0.98	0.0371	5.49	0.0093	6.90
	7	5.96E+04	− 0.11	0.0	0.82	0.99	0.0448	6.29	0.0125	7.94
	8	6.50E+04	− 0.11	0.0	0.88	0.99	0.0437	5.63	0.0105	7.11
	9	7.58E+04	− 0.12	0.0	1.02	0.99	0.0507	5.61	0.0145	7.26
	10	8.41E+04	− 0.14	0.1	1.13	0.99	0.0567	5.65	0.0168	7.11
PVC63	1	9.03E+03	− 0.09	0.04	0.30	0.96	0.0148	9.61	0.0002	10.31
	2	1.44E+04	− 0.10	0.04	0.44	0.97	0.0122	5.00	0.0002	5.79
	3	2.05E+04	− 0.10	0.04	0.59	0.98	0.0094	2.71	0.0000	3.14
	4	2.62E+04	− 0.09	0.04	0.72	0.99	0.0042	0.94	0.0000	1.20
	5	3.01E+04	− 0.10	0.04	0.82	0.95	0.0137	2.69	0.0000	3.19
	6	3.31E+04	− 0.10	0.04	0.90	0.98	0.0098	1.73	0.0000	2.05
	7	4.01E+04	− 0.12	0.05	1.08	0.98	0.0105	1.55	0.0001	1.97
	8	4.25E+04	− 0.13	0.05	1.15	0.98	0.0107	1.49	0.0000	1.75
	9	4.82E+04	− 0.15	0.06	1.31	0.99	0.0097	1.18	0.0000	1.36
	10	5.27E+04	− 0.15	0.06	1.42	0.99	0.0104	1.16	0.0000	1.38
	11	5.67E+04	− 0.18	0.07	1.55	0.99	0.0188	1.95	0.0000	1.44
	12	6.30E+04	− 0.20	0.08	1.71	0.99	0.0237	2.21	0.0000	1.73