Table A2.

Identified parameters of the dose kernel for different beam energies

	$b_1$	$b_2$	$b_3$	$b_4$	$b_5$	$b_6$	$b_7$	$b_8$
6X
5 cm	0.00518	0.00037	0.99515	5.39435	0.00339	1.22809	0.00146	0.06500
10 cm	0.00553	0.00057	0.99281	5.61374	0.00323	1.07309	0.00387	0.07789
15 cm	0.00555	0.00077	0.98969	5.51726	0.00249	1.02052	0.00782	0.09486
20 cm	0.00479	0.00081	0.98745	5.79484	0.00189	1.10226	0.01066	0.10108
6FFF
5 cm	0.00297	$4.233\times {10}^{-10}$	0.99456	7.80186	$1.18\times {10}^{-10}$	0.41998	0.00544	0.18896z
10 cm	0.00381	$1.048\times {10}^{-10}$	0.96347	14.9991	0.03170	3.31156	0.00483	0.16257
15 cm	0.00310	$2.341\times {10}^{-9}$	0.95928	14.9991	0.03424	3.23009	0.00648	0.14223
0 cm	0.00206	$2.287\times {10}^{-9}$	0.99287	9.91172	$5.92\times {10}^{-10}$	0.18822	0.00707	0.18876
10X
5 cm	0.00312	0.00013	0.99451	8.01828	0.00536	1.56025	0.00012	$1.13\times {10}^{-6}$
10 cm	0.00285	0.00029	0.99470	8.71554	0.00479	1.39946	0.00051	0.02454
15 cm	0.00196	0.00031	0.99497	10.5116	0.00396	1.44461	0.00107	0.06937
20 cm	0.00210	0.00049	0.99658	14.9910	0.00245	1.53943	0.00097	0.09055
10XFFF
5 cm	$2.880\times {10}^{-9}$	0.00328	0.98490	6.96354	0.00019	0.28823	0.01502	0.99999
10 cm	$4.869\times {10}^{-9}$	0.003377	0.990033	6.414833	$1.41\times {10}^{-11}$	0.471982	0.009967	0.171306
15 cm	$4.42\times {10}^{-10}$	0.003379	0.987812	14.99998	$7.853\times {10}^{-5}$	0.248740	0.012109	0.999985
20 cm	$1.015\times {10}^{-8}$	0.003579	0.989572	7.275969	$1.08\times {10}^{-11}$	0.768778	0.010428	0.137472