Table 8.

Parameters obtained by the 3P method with simulated spectra created with different percentages of added noise. Form 3.

Parameter	Noise level (%)				Theoretical value
	1	2	5	10
First third (lower frequencies)
Mean R0	697.64	1930.62	548.61	512.44	500
Mean Rinf	− 1352.06	− 132.88	381.61	421.85	250
Mean τ	− 4.28E − 03	− 1.71E + 00	3.66E − 05	5.71E − 06	5.60E − 06
Mean α	0.7493	0.6529	0.3222	0.2197	0.8
SD R0	952.46	13,727.78	217.06	178.74
SD Rinf	14,063.78	3371.96	226.46	151.54
SD τ	3.11E − 02	1.71E + 01	6.39E − 04	8.66E − 05
SD α	1.58E − 01	2.74E − 01	4.80E − 01	4.89E − 01
Middle third
Mean R0	498.93	502.22	487.87	484.40	500
Mean Rinf	250.92	247.80	258.54	255.97	250
Mean τ	5.61E − 06	5.39E − 06	3.13E − 06	1.12E − 06	5.60E − 06
Mean α	0.8106	0.7590	0.4895	0.3544	0.8
SD R0	17.83	35.37	144.25	205.31
SD Rinf	16.22	33.18	149.30	204.56
SD τ	2.30E − 07	1.62E − 06	5.88E − 06	1.70E − 05
SD α	8.41E − 02	1.39E − 01	4.70E − 01	5.03E − 01
Last third (higher frequencies)
Mean R0	476.75	353.17	289.55	752.48	500
Mean Rinf	91.96	− 322.14	177.02	− 75.70	250
Mean τ	2.47E − 05	7.27E − 06	1.08E − 06	1.18E + 03	5.60E − 06
Mean α	0.6909	0.4680	0.2706	0.0888	0.8
SD R0	938.60	302.39	100.11	4751.56
SD Rinf	428.00	4883.04	501.85	2999.99
SD τ	1.85E − 04	4.48E − 05	9.14E − 06	1.18E + 04
SD α	2.36E − 01	4.02E − 01	4.75E − 01	3.44E − 01