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

Note: Best design for m=3, p=11 and n=15.

try #     	1
seed      	1230952588125
# of iterations	7
f         	0
det       	1.43804704E8
std. det  	1.662529E-5
TF        	1

Factor levels (columns 2-4):

-1	1	0	-1	
-0.8571	0	0	0	
-0.7143	-1	1	0	
-0.5714	0	-1	1	
-0.4286	-1	-1	0	
-0.2857	0	1	1	
-0.1429	1	0	1	
0	0	0	0	
0.1429	-1	0	-1	
0.2857	0	-1	-1	
0.4286	1	1	0	
0.5714	0	1	-1	
0.7143	1	-1	0	
0.8571	0	0	0	
1	-1	0	1	

X'X

5.7143	0	0	0	0	0	-0	0	-0	0	0	
	15	8	8	8	0	0	0	0	0	0	
		8	4	4	0	0	0	0	0	0	
			8	4	0	0	0	0	0	0	
				8	0	0	0	0	0	0	
					8	0	0	0	0	0	
						8	0	0	0	0	
							8	0	0	0	
								4	0	0	
									4	0	
										4	

inverse(X'X)

0.175	0	-0	-0	-0	0	0	-0	0	0	-0	
	0.3333	-0.1667	-0.1667	-0.1667	0	0	-0	0	0	-0	
		0.2708	0.0208	0.0208	0	-0	0	-0	-0	0	
			0.2708	0.0208	0	-0	0	-0	-0	0	
				0.2708	0	-0	0	-0	-0	0	
					0.125	0	0	0	0	-0	
						0.125	-0	0	0	-0	
							0.125	-0	-0	0	
								0.25	0	-0	
									0.25	-0	
										0.25	

Note: RAT used 0.016 seconds.