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G. DUCT SOUND DESIGN TABLES

G. DUCT SOUND DESIGN TABLES

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DUCT

DESIGN

TABLES

AND

Table 14-36 LISTENING CONDITIONS AND TELEPHONE USE AS A FUNCTION
OF NC-RC LEVELS

Table 14-37 SOUND SOURCES, TRANSMISSION PATHS, AND
RECOMMENDED NOISE REDUCTION METHODS

14.66

CHARTS

CHAPTER 14

Table 14-37 SOUND SOURCES, TRANSMISSION PATHS, AND
RECOMMENDED NOISE REDUCTION METHODS (Cont.)

14.67

1/1 Octave Band Center Frequency-Hz
250
500
1000
2000
4000

Fan Type

63

125

Centrifugal
Airfoil, Backward Curved,
Backward Inclined
Wheel Diameter
(inches)
> 36 in.
< 36 in.

40
45

40
45

39
43

34
39

30
34

23
28

19
24

17
19

Forward Curved

53

53

43

36

36

31

26

21

56
58
61

47
54
58

43
45
53

39
42
48

37
38
46

32
33
44

29
29
41

26
26
38

Hub Ratio
0.3-0.4
0.4-0.6
0.6-0.8

49
49
53

43
43
52

43
46
51

48
43
51

47
41
49

45
36
47

38
30
43

34
28
40

Wheel Diameter
(inches)
> 40
> 40

51
48

46
47

47
49

49
53

47
52

46
51

39
43

37
40

48

51

58

56

55

52

46

42

All

Radial
Total Press (in.w.g.)
Material Wheel
4-10
Medium Pressure
6-15
High Pressure
15-60
Vaneaxial

Tubeaxial

Propeller
General ventilation and
Cooling towers
all

Table 14-39 BLADE FREQUENCY INCREMENTS
(BFI)
Fan Type
Centrifugal
Airfoil, backward
curved, backward
inclined
Forward curved
Radial blade,
pressure blower
Vaneaxial
Tubeaxial
Propeller
Cooling Tower

14.68

1/1 Octave Band in
which BFI occurs

BFI
dB

250 Hz

3

500 Hz
125 Hz

2
8

125 Hz
63 Hz

6
7

3 Hz

5

8000

Table 14-40 CORRECTION FACTOR, C, FOR
OFF-PEAK OPERATION
Static Efficiency
% of Peak

Correction Factor
dB

90 to 100
85 to 89
75 to 85
65 to 74
55 to 64
50 to 54
below 50

0
3
6
9
12
15
16

CHAPTER 14

Table 14-41 TLout vs. FREQUENCY FOR VARIOUS RECTANGULAR DUCTS

1/1 Octave Band Center Frequency-Hz

Duct Size
(in. x in.)

Gauge

63

125

250

500

1000

2000

4000

8000

12 x 12
12 x 24
12 x 48

24 ga.
24 ga.
22 ga.

21
19
19

24
22
22

27
25
25

30
28
28

33
31
31

36
35
37

41
41
43

45
45
45

24 x 24

22 ga.

20

23

26

29

32

37

43

45

31
35
35

39
41
41

45
45
45

45
45
45

29
30
29

26
27
25

23
24
22

20
21
19

20 ga.
18 ga.
18 ga.

24 x 48
48 x 48
48 x 96

Data are for duct lengths of 20 feet, but values may be used for the cross section shown regardless of length.
Table 14-42 TLin vs. FREQUENCY FOR VARIOUS RECTANGULAR DUCTS
Duct Size
(in. x in.)
12 x
12 x
12 x
24 x
24 x
48 x
48 x

12
24
48
24
48
48
96

Gauge

63

125

24 ga.
24 ga.
22 ga.
22 ga.
20 ga.
18 ga.
18 ga.

16
15
14
13
12
10
11

16
15
14
13
15
19
19

1/1 Octave Band Center Frequency-Hz
2000
1000
500
250
30
28
28
29
28
32
32

25
25
25
26
26
27
26

16
17
22
21
23
24
22

33
32
34
34
36
38
38

4000

8000
42
42
42
42
42
42
42

38
38
40
40
42
42
42

Data are for duct lengths of 20 feet, but values may be used for the cross section shown regardless of length.
Table 14-43 EXPERIMENTALLY MEASURED TLout vs. FREQUENCY FOR ROUND DUCTS
1/1 Octave Band Center Frequency-Hz
4000
2000
1000
500
250

Duct Size
Length
Diam.

Gauge

63

125

Long Seam Ducts
15 ft
8 in.
15 ft
14 in.
15 ft
22 in.
15 ft
32 in.

26 ga.
24 ga.
22 ga.
22 ga.

45
50
47
51

53
60
53
46

55
54
37
26

52
36
33
26

44
34
33
24

35
31
27
22

34
25
25
38

26
38
43
43

Spiral Wound Ducts
10 ft
8 in.
10 ft
14 in.
10 ft
26 in.
10 ft
26 in.
10 ft
32 in.

26 ga.
26 ga.
24 ga.
16 ga.
22 ga.

48
43
45
48
43

64
53
50
53
42

75
55
26
36
28

72
33
26
32
25

56
34
25
32
26

56
35
22
28
24

46
25
36
41
40

29
40
43
36
35

8000

14.69

DUCT

DESIGN

TABLES

AND

CHARTS

Table 14-44 CALCULATED TLout vs. FREQUENCY FOR ROUND DUCTS
Duct Size
Diam.
Length

Gauge

63

125

Long Seam Ducts
8 in.
15 ft
14 in.
15 ft
22 in.
15 ft
32 in.
15 ft

26
24
22
22

ga.
ga.
ga.
ga.

50
50
50
50

50
50
50
44

50
48
38
29

44
37
32
26

42
35
30
24

40
33
28
22

38
31
26
37

Spiral Wound Ducts
8 in.
10 ft
14 in.
10 ft
26 in.
10 ft
26 in.
10 ft
32 in.
10 ft

26
26
24
16
22

ga.
ga.
ga.
ga.
ga.

50
50
45
50
50

50
50
45
50
47

50
48
35
42
32

46
35
27
34
26

42
33
25
32
24

40
31
23
30
22

38
29
38
45
37

1/1 Octave Band Center Frequency-Hz
250
500
1000
2000

4000

Table 14-45 EXPERIMENTALLY DETERMINED TLin vs. FREQUENCY FOR ROUND DUCTS
Duct Size
Diam.
Length

Gauge

63

125

Long Seam Ducts
8 in.
15 ft
14 in.
15 ft
22 in.
15 ft
32 in.
15 ft

26
24
22
22

ga.
ga.
ga.
ga.

17
27
28
35

31
43
40
36

39
43
30
23

42
31
30
23

41
31
30
21

32
28
24
19

31
22
22
35

23
35
40
40

Spiral Wound Ducts
8 in.
10 ft
14 in.
10 ft
26 in.
10 ft
26 in.
10 ft
32 in.
10 ft

26
26
24
16
22

ga.
ga.
ga.
ga.
ga.

20
20
27
30
27

42
36
38
41
32

59
44
20
30
25

62
28
23
29
22

53
31
22
29
23

43
32
19
25
21

26
22
33
38
37

26
37
40
33
42

1/1 Octave Band Center Frequency-Hz
250
500
1000
2000
4000

8000

Table 14-46 CALCULATED TLin vs. FREQUENCY FOR ROUND DUCTS
Duct Size
Diam.
Length

Gauge

63

125

Long Seam Ducts
8 in.
15 ft
14 in.
15 ft
22 in.
15 ft
32 in.
15 ft

26
24
22
22

ga.
ga.
ga.
ga.

17
22
26
29

23
28
32
34

29
34
31
26

34
32
29
23

39
32
27
21

37
30
25
19

35
28
23
34

Spiral Wound Ducts
8 in.
10 ft
14 in.
10 ft
26 in.
10 ft
26 in.
10 ft
32 in.
10ft

26 ga.
26 ga.
24 ga.
16 ga.
22 ga.

17
27
27
27
29

23
38
33
33
35

29
37
29
36
29

35
30
24
31
23

39
30
22
29
21

37
28
20
27
19

35
26
35
42
34

14.70

1/1 Octave Band Center Frequency-Hz
250
500
1000
2000

4000

CHAPTER 14

Table 14-47 TLout vs. FREQUENCY FOR VARIOUS FLAT-OVAL DUCTS
Duct Size
(in. x in.)

Gauge

63

125

12
24
24
48
48
96
96

24 ga.
24 ga.
24 ga.
22 ga.
22 ga.
20 ga.
18 ga.

31
24
28
23
27
22
28

34
27
31
26
30
25
31

x
x
x
x
x
x
x

6
6
12
12
24
24
48

1/1 Octave Band Center Frequency-Hz
250
500
1000
2000
37
30
34
29
33
28
-

40
33
37
32

43
36

4000

8000

-

-

-

-

-

-

-

-

-

Table 14-48 TLin vs. FREQUENCY FOR VARIOUS FLAT-OVAL DUCTS
Duct Size
(in. x in.)

Gauge

63

125

12
24
24
48
48
96
96

24 ga.
24 ga.
24 ga.
22 ga.
22 ga.
20 ga.
18 ga.

18
17
15
14
12
11
19

18
17
16
14
21
22
28

x
x
x
x
x
x
x

6
6
12
12
24
24
48

1/1 Octave Band Center Frequency-Hz
250
500
1000
2000
22
18
25
26
30
25

31
30
34
29

40
33

4000

8000

-

-

-

-

-

-

-

-

-

-

Table 14-49 ABSORPTION COEFFICIENTS FOR SELECTED PLENUM MATERIALS

63

125

1/1 Octave Band Center Frequency-Hz
250
500
1000

2000.

4000

Non-Sound Absorbing Materials
Concrete
Bare Sheet Metal

0.01
0.04

0.01
0.04

0.01
0.04

0.02
0.05

0.02
0.05

0.02
0.05

0.03
0.07

1 in. 3.0 lb/ft3
0.02
Fiberglass Insulation Board
2 in. 3.0 lb/ft3
0.18
Fiberglass Insulation Board

0.03

0.22

0.69

0.91

0.96

0.99

0.22

0.82

1.00

1.00

1.00

1.00

3 in. 3.0 lb/ft3
0.48
Fiberglass Insulation Board

0.53

1.00

1.00

1.00

1.00

1.00

4 in. 3.0 lb/ft3
0.76
Fiberglass Insulation Board

0.84

1.00

1.00

1.00

1.00

0.97

Sound Absorbing Materials

14.71

DUCT

Duct Size
in. x in.
6
12
12
24
48
72

6
12
24
24
48
72

x
x
x
x
x
x

P/A
1/ft
8.0
4.0
3.0
2.0
1.0
0.7

0.30
0.35
0.40
0.25
0.15
0.10

0.20
0.20
0.20
0.20
0.10
0.10

0.10
0.10
0.10
0.10
0.07
0.05

0.10
0.06
0.05
0.03
0.02
0.02

TABLES

AND

CHARTS

Table 14-51 COEFFICIENTS FOR EQUATION
11-102 IN CHAPTER 11

Table 14-50 SOUND ATTENUATION IN UNLINED
RECTANGULAR SHEET METAL DUCTS
Attenuation-d B/ft
1/1 Octave Band Center
Freq.-Hz
Above
250
250
125
63

DESIGN

1/1 Octave
Band Center
Freq.-Hz
63
125
250
500
1,000
2,000
4,000
8,000

B

C

D

0.0133
0.0574
0.2710
1.0147
1.7700
1.3920
1.5180
1.5810

1.959
1.410
0.824
0.500
0.695
0.802
0.451
0.219

0.917
0.941
1.079
1.087
0.000
0.000
0.000
0.000

If duct is externally lined, multiply results associated
with 63 Hz, 125 Hz and 250 Hz by 2.

Table 14-52 INSERTION LOSS FOR RECTANGULAR DUCTS WITH 1" OF FIBERGLASS LINING

DIMENSIONS
in. x in.

63

125

Insertion Loss-dB/ft
1/1 Octave Band Center Frequency-Hz
2000
1000
500
250

4000

8000

4 x

4
6
8
10

2.00
1.49
1.28
1.16

2.06
1.63
1.43
1.32

2.18
1.89
1.75
1.66

3.66
3.33
3.16
3.05

10.10
8.90
8.27
7.80

10.36
8.95
8.22
7.78

4.80
4.41
4.21
4.07

2.87
2.74
2.67
2.63

6 x

6
10
12
18

1.08
0.82
0.77
0.69

1.24
0.96
0.90
0.79

1.60
1.35
1.29
1.18

2.98
2.66
2.57
2.42

7.62
6.52
6.23
5.74

7.48
6.26
5.94
5.41

3.98
3.59
3.49
3.31

2.60
2.46
2.42
2.36

8 x

8
12
18
24

0.77
0.65
0.60
0.56

0.90
0.74
0.67
0.60

1.29
1.12
1.04
0.96

2.57
2.34
2.22
2.09

6.23
5.49
5.10
4.70

5.94
5.13
4.72
4.29

3.49
3.21
3.06
2.90

2.42
2.32
2.26
2.20

10 x 10
16
20
30

0.63
0.55
0.53
0.51

0.71
0.59
0.55
0.51

1.09
0.94
0.89
0.82

2.29
2.06
1.98
1.87

5.34
4.62
4.37
4.02

4.97
4.21
3.94
3.59

3.15
2.86
2.76
2.62

2.30
2.19
2.15
2.09

12 x 12
18
24
36

0.56
0.51
0.50
0.40

0.60
0.52
0.48
0.43

0.96
0.85
0.79
0.74

2.09
1.90
1.81
1.70

4.70
4.14
3.85
3.54

4.29
3.71
3.41
3.10

2.90
2.67
2.54
2.41

2.20
2.11
2.06
2.00

15 x 15
22
30
45

0.51
0.40
0.36
0.32

0.51
0.44
0.39
0.34

0.82
0.75
0.68
0.62

1.87
1.71
1.61
1.52

4.02
3.57
3.29
3.03

3.59
3.12
2.85
2.59

2.62
2.42
2.29
2.17

2.09
2.01
1.96
1.90

14.72

CHAPTER 14

Table 14-52 INSERTION LOSS FOR RECTANGULAR DUCTS WITH 1" OF FIBERGLASS LINING (Cont.)
18 x 18
28
36
54

0.40
0.33
0.30
0.27

0.43
0.35
0.32
0.28

0.74
0.64
0.59
0.54

1.70
1.54
1.47
1.38

3.54
3.09
2.90
2.67

3.10
2.65
2.46
2.24

2.41
2.20
2.11
2.00

2.00
1.91
1.87
1.82

24 x 24
36
48
72

0.30
0.25
0.23
0.21

0.32
0.26
0.24
0.21

0.59
0.51
0.47
0.43

1.47
1.34
1.27
1.20

2.90
2.55
2.37
2.19

2.46
2.13
1.95
1.78

2.11
1.94
1.85
1.75

1.87
1.80
1.76
1.71

30 x 30
45
60

0.24
0.21
0.19

0.25
0.21
0.19

0.49
0.43
0.39

1.31
1.20
1.13

2.48
2.19
2.03

2.06
1.78
1.63

1.91
1.75
1.67

1.78
1.71
1.67

36 x 36
54
72

0.21
0.18
0.16

0.21
0.17
0.16

0.43
0.37
0.34

1.20
1.09
1.03

2.19
1.93
1.79

1.78
1.54
1.41

1.75
1.61
1.54

1.71
1.64
1.60

42 x 42
64
84

0.18
0.16
0.14

0.18
0.15
0.14

0.38
0.32
0.30

1.11
1.01
0.96

1.96
1.72
1.61

1.57
1.35
1.25

1.63
1.50
1.43

1.65
1.58
1.55

48 x 48
72

0.16
0.14

0.16
0.13

0.34
0.29

1.03
0.94

01.79
1.58

1.41
1.22

1.54
1.42

1.60
1.54

Table 14-53 INSERTION LOSS FOR RECTANGULAR DUCTS WITH 2" OF FIBERGLASS LINING

63

125

Insertion Loss-dB/ft
1/1 Octave Band Center Frequency-Hz
250
500
1000
2000

4 x 4
6
8
10

3.54
2.57
2.15
1.92

3.81
2.99
2.60
2.38

4.52
3.91
3.59
3.40

7.61
6.94
6.58
6.36

10.10
8.90
8.27
7.88

10.36
8.95
8.22
7.78

4.80
4.41
4.21
4.07

2.87
2.74
2.67
2.63

6 x

6
10
12
18

1.78
1.27
1.16
1.00

2.23
1.69
1.56
1.35

3.27
2.74
2.61
2.38

6.20
5.54
5.36
5.05

7.62
6.52
6.23
5.74

7.48
6.26
5.94
5.41

3.98
3.59
3.49
3.31

2.60
2.46
2.42
2.36

8 x 8
12
18
24

1.16
0.93
0.83
0.74

1.56
1.25
1.11
0.98

2.61
2.26
2.08
1.90

5.36
4.89
4.64
4.37

6.23
5.49
5.10
4.70

5.94
5.13
4.72
4.29

3.49
3.21
3.06
2.90

2.42
2.32
2.26
2.20

10 x 10
16
20
30

0.88
0.72
0.68
0.62

1.20
0.95
0.87
0.78

2.19
1.87
1.76
1.61

4.79
4.32
4.15
3.91

5.34
4.62
4.37
4.02

4.97
4.21
3.94
3.59

3.15
2.86
2.76
2.62

2.30
2.19
2.15
2.09

DIMENSIONS
in. x in.

4000

8000

14.73

DUCT

DESIGN

TABLES

AND

CHARTS

Table 14-53 INSERTION LOSS FOR RECTANGULAR DUCTS WITH 2" OF FIBERGLASS LINING (Cont.)
12 x 12
18
24
36

0.74
0.64
0.60
0.48

0.98
0.81
0.73
0.64

1.90
1.66
1.53
1.42

4.37
3.99
3.78
3.56

4.70
4.14
3.85
3.54

4.29
3.71
3.41
3.10

2.90
2.67
2.54
2.41

2.20
2.11
2.06
2.00

15 x 15
22
30
45

0.62
0.48
0.42
0.37

0.78
0.65
0.57
0.49

1.61
1.43
1.30
1.18

3.91
3.58
3.38
3.19

4.02
3.57
3.29
3.03

3.59
3.12
2.85
2.59

2.62
2.42
2.29
2.17

2.09
2.01
2.96
1.90

18 x 18
28
36
54

0.48
0.38
0.34
0.30

0.64
0.51
0.46
0.40

1.42
1.21
1.12
1.02

3.56
3.23
3.08
2.91

3.54
3.09
2.90
2.67

3.10
2.65
2.46
2.24

2.41
2.20
2.11
2.00

2.00
1.91
1.87
1.82

24 x 24
36
48
72

0.34
0.28
0.26
0.23

0.46
0.37
0.33
0.29

1.12
0.97
0.89
0.81

3.08
2.81
2.67
2.51

2.90
2.55
2.37
2.19

2.46
2.13
1.95
1.78

2.11
1.94
1.85
1.75

1.87
1.80
1.76
1.71

30 x 30
45
60

0.27
0.23
0.21

0.35
0.29
0.26

0.94
0.81
0.74

2.76
2.51
2.38

2.48
2.19
2.03

2.06
1.78
1.63

1.91
1.75
1.67

1.78
1.71
1.67

36 x 36
54
72

0.23
0.19
0.17

0.29
0.24
0.21

0.81
0.70
0.64

2.51
2.29
2.18

2.19
1.93
1.79

1.78
1.54
1.41

1.75
1.61
1.54

1.71
1.64
1.60

42 x 42
64
84

0.20
0.17
0.15

0.24
0.20
0.17

0.71
0.61
0.54

2.33
2.12
1.97

1.96
1.72
1.56

1.57
1.35
1.21

1.63
1.50
1.41

1.65
1.58
1.53

48 x 48
72

0.17
0.15

0.21
0.17

0.64
0.55

2.18
1.99

1.79
1.58

1.41
1.22

1.54
1.42

1.60
1.54

Table 14-54 SOUND ATTENUATION IN STRAIGHT ROUND DUCTS

Diameter-in.
D <7 < D <15 < D <30 < D <-

14.74

7
15
30
60

63

125

0.03
0.03
0.02
0.01

0.03
0.03
0.02
0.01

Attenuation-dB/ft
1/1 Octave Band Center Frequency-Hz
250
500
1000
0.05
0.03
0.02
0.01

0.05
0.05
0.03
0.02

0.10
0.07
0.05
0.02

2000

4000

0.10
0.07
0.05
0.02

0.10
0.07
0.05
0.02

CHAPTER 14

Table 14-55 CONSTANTS FOR USE IN EQUATION 11-104 IN CHAPTER 11
1/1 Octave
Band Center
Freq.-Hz
63
125
250
500
1000
2000
4000
8000

A

B

C

D

E

F

0.2825
0.5237
0.3652
0.1333
1.933
2.730
2.800
1.545

0.3447
0.2234
0.7900
1.8450
0.0
0.0
0.0
0.0

- 5.251 E-2
- 4.936E-3
-0.1157
- 0.3735
0.0
0.0
0.0
0.0

- 3.837E-2
- 2.724E-2
- 1.834E-2
- 1.293E-2
6.135E-2
- 7.341 E-2
-0.1467
- 5.452E-2

9.132E-4
3.377E-4
- 1.211 E-4
8.624E-5
- 3.891 E-3
4.428E-4
3.404E-3
1.290E-3

- 8.294E-6
- 2.490E-4
2.681 E-4
- 4.986E-6
3.934E-5
1.006E-6
-2.851E-5
- 1.318E-5

Table 14-56 INSERTION LOSS FOR ACOUSTICALLY LINED ROUND DUCTS-1 INCH LINING
Diameter
(inches)
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
36
38
40
42
44
46
48
50
52
54
56
58
60

63

125

Insertion Loss-dB/ft
1/1 Octave Band Center Frequency-Hz
250
500
1000
2000

0.38
0.32
0.27
0.23
0.19
0.16
0.13
0.11
0.08
0.07
0.05
0.03
0.02
0.01
0
0
0
0
0
0
0
0
0
0
0
0
0
0

0.59
0.54
0.50
0.46
0.42
0.38
0.35
0.31
0.28
0.25
0.22
0.19
0.16
0.14
0.11
0.08
0.06
0.03
0.01
0
0
0
0
0
0
0
0
0

0.93
0.89
0.85
0.81
0.77
0.73
0.69
0.65
0.61
0.57
0.53
0.49
0.45
0.42
0.38
0.35
0.31
0.28
0.25
0.23
0.20
0.18
0.15
0.14
0.12
0.10
0.09
0.08

1.53
1.50
1.48
1.45
1.43
1.40
1.37
1.34
1.31
1.28
1.24
1.20
1.16
1.12
1.07
1.02
0.96
0.91
0.84
0.78
0.71
0.63
0.55
0.46
0.37
0.28
0.17
0.06

2.17
2.19
2.20
2.18
2.14
2.08
2.01
1.92
1.82
1.71
1.59
1.46
1.33
1.20
1.07
0.93
0.80
0.68
0.56
0.45
0.35
0.26
0.19
0.13
0.09
0.08
0.08
0.10

2.31
2.17
2.04
1.91
1.79
1.67
1.56
1.45
1.34
1.24
1.14
1.04
0.95
0.87
0.79
0.71
0.64
0.57
0.50
0.44
0.39
0.34
0.29
0.25
0.22
0.18
0.16
0.14

4000

8000

2.04
1.83
1.64
1.48
1.34
1.21
1.10
1.00
0.92
0.85
0.79
0.74
0.69
0.66
0.63
0.60
0.58
0.55
0.53
0.51
0.48
0.45
0.41
0.37
0.31
0.25
0.18
0.09

1.26
1.18
1.12
1.05
1.00
0.95
0.90
0.87
0.83
0.80
0.77
0.74
0.71
0.69
0.66
0.64
0.61
0.58
0.55
0.52
0.48
0.44
0.40
0.34
0.29
0.22
0.15
0.07

14.75

DUCT

DESIGN

TABLES

AND

CHARTS

Table 14-57 INSERTION LOSS FOR ACOUSTICALLY LINED ROUND DUCTS-2 INCH LINING
Diameter
(inches)
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
36
38
40
42
44
46
48
50
52
54
56
58
60

14.76

63

125

Insertion Loss-dB/ft
1/1 Octave Band Center Frequency-Hz
2000
1000
500
250

0.56
0.51
0.46
0.42
0.38
0.35
0.32
0.29
0.27
0.25
0.24
0.22
0.21
0.20
0.19
0.18
0.17
0.16
0.15
0.13
0.12
0.11
0.09
0.07
0.05
0.02
0
0

0.80
0.75
0.71
0.67
0.63
0.59
0.56
0.52
0.49
0.46
0.43
0.40
0.37
0.34
0.32
0.29
0.27
0.24
0.22
0.20
0.17
0.15
0.12
0.10
0.08
0.05
0.03
0

1.37
1.33
1.29
1.25
1.21
1.17
1.13
1.09
1.05
1.01
0.97
0.93
0.90
0.86
0.82
0.79
0.76
0.73
0.70
0.67
0.64
0.62
0.60
0.58
0.56
0.55
0.53
0.53

2.25
2.23
2.20
2.18
2.15
2.12
2.10
2.07
2.03
2.00
1.96
1.93
1.88
1.84
1.79
1.74
1.69
1.63
1.57
1.50
1.43
1.36
1.28
1.19
1.10
1.00
0.90
0.79

2.17
2.19
2.20
2.18
2.14
2.08
2.01
1.92
1.82
1.71
1.59
1.46
1.33
1.20
1.07
0.93
0.80
0.68
0.56
0.45
0.35
0.26
0.19
0.13
0.09
0.08
0.08
0.10

2.31
2.17
2.04
1.91
1.79
1.67
1.56
1.45
1.34
1.24
1.14
1.04
0.95
0.87
0.79
0.71
0.64
0.57
0.50
0.44
0.39
0.34
0.29
0.25
0.22
0.18
0.16
0.14

4000
2.04
1.83
1.64
1.48
1.34
1.21
1.10
1.00
0.92
0.85
0.79
0.74
0.69
0.66
0.63
0.60
0.58
0.55
0.53
0.51
0.48
0.45
0.41
0.37
0.31
0.25
0.18
0.09

8000
1.26
1.18
1.12
1.05
1.00
0.95
0.90
0.87
0.83
0.80
0.77
0.74
0.71
0.69
0.66
0.64
0.61
0.58
0.55
0.52
0.48
0.44
0.40
0.34
0.29
0.22
0.15
0.07