Table IX.

Calculated and measured EDWF for field geometry D, 18 MV photons.

	$-5\hspace{0.17em}\text{cm}$			Center of field (–10 cm)			–8cm
EDW angle	Calc.	Meas.	% diff.	Calc.	Meas.	% diff.	Calc.	Meas.	% diff.
10	0.973	0.972	$-0.10$	0.951	0.951	0.00	0.935	0.936	0.11
15	0.959	0.958	$-0.10$	0.926	0.923	$-0.32$	0.901	0.903	0.22
20	0.944	0.941	$-0.32$	0.899	0.897	$-0.22$	0.866	0.865	$-0.12$
25	0.928	0.926	$-0.22$	0.870	0.866	$-0.46$	0.827	0.826	$-0.12$
30	0.911	0.909	$-0.22$	0.838	0.834	$-0.48$	0.786	0.785	$-0.13$
45	0.844	0.842	$-0.24$	0.718	0.713	$-0.70$	0.626	0.626	0.00
60	0.725	0.720	$-0.69$	0.504	0.497	$-1.39$	0.341	0.340	$-0.29$