before

2 hours after mask removal

Difference

Delta/Percent

Control area

average

50.9

47.9

−3.0

−5.89

Minimum

41.5

0.0

−44.0

−100.00

Maximum

69.8

69.2

5.3

11.56

Stand. dev.

8.8

19.1

14.8

33.22

Variance

76.7

365.4

217.8

1103.56

Activator: Water

average

53.3

64.2

10.9

20.45

Minimum

40.8

47.9

7.1

13.29

Maximum

66.9

78.2

15.2

26.17

Stand.dev.

8.3

10.0

2.7

4.11

Variance

68.7

99.7

7.2

16.91

Activator Liquid

average

51.3

74.9

23.6

46.00

Minimum

43.3

61.0

15.0

27.27

Maximum

57.3

87.7

38.4

77.89

Stand.dev.

4.6

9.2

7.7

15.52

Variance

21.5

85.5

59.6

240.74