Time (Hours)

PT (95% Confidence Interval)

Mean

Std. Error

Lower Bound

Upper Bound

1

17.818

0.605

16.617

19.020

2

17.889

0.579

16.739

19.039

3

18.303

0.596

17.121

19.486

4

18.475

0.589

17.306

19.644