Field Size (cm × cm)

Depth in water(cm)

Timer error, τ (s)

5 × 5

5

1.21

10

1.20

10 × 10

5

1.18

10

1.22

15 × 15

5

1.22

10

1.22

20 × 20

5

1.22

10

1.18

25 × 25

5

1.21

10

1.22

30 × 30

5

1.22

10

1.23

35 × 35

5

1.23

10

1.20

Mean

1.21

Standard Deviation

0.02

Standard Deviation from mean

0.04