Table 1.

The mean deviations of the leaves (Banks B and A) for the ten segments of the open gap field delivered at the gantry angle 0° in three repeated deliveries.

	Delivery	Mean deviation of leaves (mm) from expected positions Segment
		1	2	3	4	5	6	7	8	9	10
Bank B	1	0.8	0.7	0.7	0.8	0.9	0.7	0.8	0.8	0.9	0.8
	2	0.8	0.7	0.7	0.8	0.9	0.8	0.7	0.8	0.9	0.8
	3	0.8	0.6	0.7	0.8	0.9	0.7	0.8	0.8	0.9	0.8
Bank A	1	0.8	0.8	0.8	0.8	1.0	0.8	0.8	0.9	0.9	1.0
	1	0.8	0.7	0.8	0.8	1.0	0.9	0.8	1.0	1.0	1.0
	3	0.8	0.7	0.8	0.8	1.0	0.9	0.9	1.0	0.9	0.9