Table 4.

Initial parameters and the means with standard errors in brackets of the 50 parameter estimates.

Parameters
Model	${\theta }_1$	${\theta }_2$	${\theta }_3$	${\theta }_4$
Initial Parameters	6.2000 × 10−9	2.4200 × 10−7	5.9800 × 10−2	4.2300 × 10−1
Our Estimates	6.5656 × 10−9	7.2467 × 10−9	2.7739 × 10−2	1.2595 × 10−1
	(4.2290 × 10−9)	(6.4759 × 10−11)	(2.8178 × 10−7)	(3.1538 × 10−6)