Sludge Formation Analysis in Hydraulic Oil of Load Haul Dumper 811MK V Machine Running at Elevated Temperatures for Bioenergy Applications

Table 8

Correlation and regression chart for wave number versus transmittance and absorbance.

Sample	Wave number vs transmittance			Wave number vs absorbance
	Correlation coefficient	Regression coefficient		Correlation coefficient	Regression coefficient
		R^2	Standard deviation		R^2	Standard deviation
New	−0.5474	0.299	12.68	0.5689	0.323	0.163
250	−0.4375	0.191	18.26	0.49068	0.241	0.333
500	−0.265	0.0702	17.14	0.397	0.157	0.403
750	−0.2099	0.041	14.65	0.3171	0.1	0.230