Temperature/˚C

34

36

38

40

42

Pearson correlation coefficient

0.764

0.68

0.680

0.907

0.980

Temperature/˚C

44

46

48

50

52

Pearson correlation coefficient

0.907

0.998*

0.952

0.475

0.495

Temperature/˚C

54

57

60

63

66

Pearson correlation coefficient

0.487

0.413

0.324

0.185

−0.048