Table 3.

Part of CCD consisting of nine experimental factors and numerical results.

Run no.	Input variables									Response
	$\mathit{UCS}$	${\sigma }_t$	$C$	$\varphi$	$E$	$\tau$	$\rho$	$I_{d2}$	$\mathit{RMR}$	$d_{\mathit{max}}$
1	152.60	4.85	2.56	23.13	2.99	12.40	1.89	82.25	72.00	52
2	152.60	4.85	7.65	33.78	8.30	12.40	2.46	50.75	72.00	68
3	152.60	14.15	2.56	23.13	8.30	33.20	2.46	82.25	34.00	41
–	–	–	–	–	–	–	–	–	–	–
–	–	–	–	–	–	–	–	–	–	–
149	102.90	9.50	0.01	28.45	5.64	22.80	2.17	66.50	53.00	97