Field size (mm)

Relative scatter factor

20 × 20

0.974

30 × 30

0.988

50 × 50

0.995

70 × 70

0.997

100 × 100

1.000

150 × 150

1.001

50 × 150

0.997

100 × 150

1.002

150 × 50

1.000

150 × 100

1.001