Measurement

0 mm

10 mm

20mm

30 mm

40 mm

50 mm

Mean

0.5425

0.6550

0.8805

1.1310

1.4880

1.8465

S.D

0.0567

0.07082

0.04796

0.05543

0.11687

0.07043

Variance

0.003

0.005

0.002

0.003

0.014

0.005