Table IV.

Summary of least square fit data for the equation (parameter $=\alpha kV{p}^2+\beta kVp+\gamma$ and the corresponding coefficient of determination $(r^2)$, given by the solid lines in Fig. 2.

Parameter	α	β	γ	$r^2$
mAs	0.04125	–2.361	34.24	0.996
time		0.03925	–2.246	32.61	0.995
HVL	$–1\times {10}^{-3}$	0.0898	–0.6192	0.998
AGD	$9.75\times {10}^{-3}$	–0.6050	10.03	0.998