Table VII.

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

	$-1\hspace{0.17em}\text{cm}$			Center of field (–5 cm)			–8cm
EDW angle	Calc.	Meas.	% diff.	Calc.	Meas.	% diff.	Calc.	Meas.	% diff.
10	0.981	0.981	0.00	0.959	0.958	$-0.10$	0.945	0.946	0.11
15	0.973	0.972	$-0.10$	0.938	0.938	0.00	0.916	0.915	$-0.11$
20	0.963	0.962	$-0.10$	0.916	0.914	$-0.22$	0.888	0.887	$-0.11$
25	0.953	0.952	$-0.10$	0.893	0.891	$-0.22$	0.857	0.855	$-0.23$
30	0.942	0.940	$-0.21$	0.868	0.868	0.00	0.824	0.824	0.00
45	0.902	0.897	$-0.55$	0.778	0.777	$-0.13$	0.704	0.703	$-0.14$
60	0.838	0.830	$-0.95$	0.632	0.629	$-0.47$	0.509	0.507	$-0.39$