Table 1.

Statistical analysis of biofilm analyzed by atomic force microscopy (AFM).

Statistical parameters	Control PAO1	Treated PAO1	Control PAH	Treated PAH
Root Mean Square (Sq)	0.06	0.04	0.08	0.04
Surface Bearing Index (Sbi)	2.22	1.06	0.74	0.94
Core Fluid Retention Index (Sci)	1.44	1.49	1.76	1.68
Valley Fluid Retention Index (Svi)	0.09	0.07	0.08	0.07
Kernel roughness depth (Sk)	0.20	0.12	0.20	0.12
Reduced peak height (Spk)	0.02	0.02	0.10	0.03
Reduced valley depth (Svk)	0.06	0.01	0.05	0.01
Roughness Average (Sa)	0.05	0.03	0.06	0.03
Surface skewness (Ssk)	0.22	0.09	0.41	0.26
Coefficient of kurtosis (Ska)	2.47	2.02	3.07	2.16
Surface Area Ratio (Sdr), %	0.03	0.01	0.09	0.03