Table 4 Results of indoor radon concentration measurements and EEI estimations for different types of buildings in four Russian cities.

From: Radon concentration in conventional and new energy efficient multi-storey apartment houses: results of survey in four Russian cities

Type of buildings

N*

AM, Bq/m3

GM, Bq/m3

σLN

95th percentile Bq/m3

EEI

Ekaterinburg

 Brick 2–5 floor

11

39

28

0.97

138

0.76

 Panel 5 floor

15

36

29

0.63

82

0.40

 Panel 7–12 floor

13

25

21

0.59

55

0.38

 Brick over 5 floors

12

28

26

0.41

52

0.71

 Panel 1990-present

16

34

29

0.60

78

0.44

 Energy efficient

35

82

66

0.67

199

1.22

 Low-rise energy efficient

1

16

16

–

–

0.86

Chelyabinsk

 Brick 2–5 floor

17

36

32

0.49

70

0.77

 Panel 5 floor

16

27

25

0.38

47

0.42

 Panel 7–12 floor

17

21

20

0.27

32

0.35

 Brick over 5 floors

3

19

19

–

–

0.76

 Panel 1990-present

62

25

23

0.39

45

0.57

 Energy efficient

14

32

29

0.47

62

1.05

Saint Petersburg

 Before 1917

14

12

10

0.65

30

0.76

 Brick 2–5 floor

14

26

21

0.67

63

0.68

 Panel 5 floor

9

23

21

0.47

45

0.45

 Panel 7–12 floor

6

18

16

0.43

33

0.46

 Brick over 5 floors

16

15

14

0.35

25

0.69

 Panel 1990-present

23

17

15

0.45

32

0.47

 Energy efficient

62

31

27

0.57

68

1.21

 Low-rise energy efficient

8

38

37

0.24

55

0.90

Krasnodar

 Brick 2–5 floor

10

42

36

0.53

86

0.74

 Panel 5 floor

10

41

34

0.62

94

0.58

 Panel 7–12 floor

7

21

20

0.36

36

0.36

 Brick over 5 floors

6

19

18

0.34

32

0.78

 Panel 1990-present

24

20

18

0.45

38

0.55

 Energy efficient

36

28

27

0.29

43

1.25

 Low-rise energy efficient

1

29

29

–

–

0.75

  1. *N is number of measured flats.
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