Difference (˚C)

Frequency

Percentage (%)

Cumulative percentage (%)

1 minute

0

31

25.8

25.8

0.1

23

19.2

45.0

0.2

31

25.8

70.8

0.3

23

19.2

90.0

0.4

7

5.8

95.8

0.5

3

2.5

98.3

0.6

2

1.7

100.0

Total

120

100.0