Table 1.

Ion chamber measured data (cGy/MU) at each field position with all eight fields irradiated used to calculate the monitor units (MU) required to generate the predetermined dose levels at each position on the XV film calibration exposure. All values were doubled for EDR film exposure.

Field		1	2	3	4	5	6	7	8	Dose (cGy)
detector position	1	0.8890	0.0015	0.0012	0.0002	0.0023	0.0012	0.0005	0.0001	16.3
	2	0.8877	0.8749	0.0035	0.0007	0.0029	0.0020	0.0011	0.0004	32.1
	3	0.8917	0.8881	0.8752	0.0025	0.0030	0.0029	0.0015	0.0006	48.2
	4	0.8943	0.8900	0.8873	0.8734	0.0027	0.0021	0.0013	0.0008	64.1
	5	0.0023	0.0012	0.0005	0.0001	0.8906	0.0015	0.0012	0.0002	80.3
	6	0.0029	0.0020	0.0011	0.0004	0.8946	0.8803	0.0035	0.0007	95.7
	7	0.0030	0.0029	0.0015	0.0006	0.8973	0.8937	0.8803	0.0025	112.0
	8	0.0027	0.0021	0.0013	0.0008	0.8992	0.8962	0.8904	0.8762	128.1
MUs		18	18	18	18	90	17	18	18