Diameters (cm)

Deviation of depth dose rate (range) (%)

Deviation of transfer coefficiency (range) (%)

Isotropy (range) (%)

1.5

−5.0 ± 1.7 (−10.0 - −2.4)

−2.5 ± 2.2 (−8.9 - −0.2)

0 ± 1.2 (−1.6 - 1.2)

2.0

−5.1 ± 0.90 (−7.9 - −3.5)

−2.6 ± 1.2 (−6.6 - −1.4)

0 ± 1.0 (−1.2 - 1.4)

2.5

−4.8 ± 0.52 (−6.3 - −3.4)

−2.2 ± 0.7 (−4.7 - −1.3)

0 ± 1.1 (−1.2 - 1.7)

3.0

−5.0 ± 0.67 (−6.5 - −3.0)

−2.3 ± 0.3 (−3.0 - −1.7)

0 ± 1.2 (−1.4 - 1.5)

3.5

−2.0 ± 0.50 (−2.8 - −0.3)

0.8 ± 0.5 (−0.4 - 2.0)

0 ± 1.5 (−1.5 - 1.8)

4.0

−1.5 ± 1.1 (−3.3 - 1.4)

1.4 ± 1.2 (−0.9 - 4.2)

0 ± 1.4 (−1.3 - 2.0)

4.5

−0.1 ± 0.9 (−1.4 - 2.3)

1.5 ± 0.9 (0.3 - 3.7)

0 ± 1.4 (−1.4 - 2.6)

5.0

−0.2 ± 0.5 (−1.1 - 1.1)

2.4 ± 0.6 (1.5 - 4.0)

0 ± 1.1 (−1.0 - 1.6)