Period

Floor 1

Floor 2

Floor 3

Floor 4

Period average (˚C)

Standard deviation (˚C)

Period average (˚C)

Standard deviation (˚C)

Period average (˚C)

Standard deviation (˚C)

Period average (˚C)

Standard deviation (˚C)

May

22.4

2.6

22.5

2.9

22.5

2.7

21.6

3.8

June

21.3

1.8

21.6

2.1

21.4

2.0

21.1

3.1

July

23.2

1.4

23.9

1.5

23.8

1.5

23.9

2.8

August

23.2

2.7

23.9

2.9

23.9

2.8

24.2

4.0

September

25.6

1.9

26.3

1.8

26.3

1.8

26.8

2.2