Table 2.

The mean deviations of the leaves (Banks B and A) for the ten segments of the open gap field delivered at the four principal orthogonal gantry angles.

	Gantry (deg)	Mean deviation of leaves (mm) from expected positions Segment
		1	2	3	4	5	6	7	8	9	10
Bank B	0	0.8	0.7	0.7	0.8	0.9	0.7	0.8	0.8	0.9	0.8
	90	0.4	0.4	0.5	0.5	0.7	0.5	0.5	0.6	0.5	0.6
	180	0.3	0.5	0.5	0.7	0.6	0.6	0.6	0.7	0.7	0.6
	270	0.8	0.7	0.7	1.0	0.9	0.7	0.8	0.8	0.8	0.8
Bank A	0	0.8	0.8	0.8	0.8	1.0	0.8	0.8	0.9	0.9	1.0
	90	0.4	0.4	0.5	0.5	0.7	0.5	0.5	0.5	0.6	0.4
	180	0.4	0.5	0.6	0.7	0.6	0.6	0.7	0.6	0.7	0.7
	270	0.8	0.7	0.8	0.8	0.8	0.7	0.8	0.7	0.8	0.8