Energies(MeV) Cross Plane In Plane Diagonal
(X-axis)% (Y-axis)% X Y
4 1.05 0.05 1.19 0.64
6 0.63 0.22 0.8 0.37
8 0.65 0.42 1.04 0.31
10 0.09 0 0.02 0.2
12 0 0.21 0.11 0.06
15 0.03 0.2 0.13 0.04
18 0.12 0.3 0.38 0.09
Average 0.367143 0.2 0.524286 0.244286
Std.dev. 0.408604 0.142244 0.480862 0.215318
Table 2d: Electron Beam Symmetry (20x20): At Depth of Maximum dose (dm) of respective energies.