Temperature/˚C

34

36

38

40

42

Pearson correlation coefficient

−0.907

−0.849

−0.880

−0.986

−0.998*

Temperature/˚C

44

46

48

50

52

Pearson correlation coefficient

−0.986

−0.967

−0.839

−0.689

−0.705

Temperature/˚C

54

57

60

63

66

Pearson correlation coefficient

−0.699

−0.638

−0.561

−0.437

−0.216