RAT 6.1: Robust Against Trends Program
(c) 2009 Design Computing (designcomputing.net/)

Note: Best design for m=3, p=9 and n=15.

try #     	5
seed      	167573102
# of iterations	3
f         	20
det       	1.0224665E10
std. det  	0.26596698
TF        	0.9787

Factor levels (columns 3-5):

-1	1	-1	-1	-1	
-1	1	-1	1	1	
-1	1	1	1	-1	
-0.5	-0.5	1	-1	-1	
-0.5	-0.5	1	-1	1	
-0.5	-0.5	1	-1	1	
0	-1	-1	-1	-1	
0	-1	-1	-1	1	
0	-1	-1	1	-1	
0.5	-0.5	-1	1	1	
0.5	-0.5	1	1	-1	
0.5	-0.5	1	1	1	
1	1	-1	-1	1	
1	1	-1	1	-1	
1	1	1	-1	-1	

X'X

7.5	0	0	-1	1	0	0	-1	-1	
	10.5	0	-1	1	-2	0	-3	1	
		15	-1	-1	-1	-1	-1	-1	
			15	-1	-1	-1	-1	-1	
				15	-1	-1	-1	-1	
					15	-1	-1	-1	
						15	-1	-1	
							15	-1	
								15	

inverse(X'X)

0.1387	0.0045	0.0021	0.011	-0.0069	0.0026	0.0021	0.0116	0.0104	
	0.1067	0.003	0.01	-0.0039	0.0164	0.003	0.0233	-0.0034	
		0.0696	0.0074	0.0067	0.0074	0.0071	0.0078	0.007	
			0.0712	0.0061	0.0086	0.0074	0.0099	0.0074	
				0.0699	0.0062	0.0067	0.0056	0.0066	
					0.072	0.0074	0.0107	0.0066	
						0.0696	0.0078	0.007	
							0.0753	0.007	
								0.0704	

Note: RAT used 0.0 seconds.