Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

2 minutes average wind speed (m/s)

2.17

2.4

1.93

2

2.07

2

2.33

2.37

2.23

2.9

2.27

2.53

Average temperature (˚C)

14.67

12.77

14.83

20.53

24.3

26.17

29.73

29.8

28.9

24.67

19.87

14.77

Relative humidity (%)

74.33

72.33

78.67

74.67

78

89

74

76.67

73.67

64

70.67

60

Number of negative oxygen ions(pieces/cm³)

1168

1134

1468

1569

1677

1892

2104

2219

2175

2051

1742

1195