Table 2 Variance of RT with different velocities, volley types and illumination levels (s).

Source	SS	df	MS	F
S	.27676827	29	.00954373
Ball Velocity(A)	.02372459	1	.02372459	5.49*
S*A	.12523422	29	.00431842
Volley(B)	.00614679	1	.00614679	1.56
S* B	.11441265	29	.00394526
Illumination(C)	.08979137	1	.08979137	26.23*
S* C	.09929178	29	.00342385
Ball Velocity* Volley (A* B)	.00556797	1	.00556797	2.61
S*A* B	.06183147	29	.00213212
Ball Velocity* Illumination (A* C)	.00571146	1	.00571146	2.72
S* A* C	.06093196	29	.00210110
Volley* Illumination(B* C)	.00561837	1	.00561837	1.74
S* B* C	.09359095	29	.00322727
Ball Velocity* Volley* Illumination(A* B* C)	.00262291	1	.00262291	0.91
S* A* B*C	.08403370	29	.00289771
Total	1.05527845	239

* p < 0.05