Gestational
 Age(weeks)) 

Number of patients

   5th centile

    Mean

  95^th centile

Normal
  fetuses

IUGR

Normal
 fetuses

IUGR

Normal
fetuses

IUGR

26

8

12.0 ± .98

8.97 ± .79

11.98± .13

6.1±.34

 20.5±.51

15.2±.61

27

6

12.6 ± .19

9.2 ± .37

12.0 ± 46

74 ± .00

21.2 ± .97

15.9 ± .80

28

10

13.7 ± .46

10.1 ± .60

12.8 ± 87

7.6 ± 56

21.8 ± 52

16.5 ± 24

29

10

14.7 ± .81

10.5 ± 11

13.1 ± .35

7.9 ± .55

22.4 ± 16

16.9 ± .60

30

5

15.1 ± 23

11.7 ± .40

13.4 ± .92

10.1 ± 85

23.8 ± 89

17.0 ± 91

31

4

15.7 ± 74

11.9 ± 16

13.9 ± 58

114 ± .78

24.7 ± 72

17.2 ± 70

32

6

16.3 ± 33

12.6 ± 69

14.6 ± .34

12.8 ± 74

25.5 ± .65

18.7 ± .55

33

7

17.9 ± .01

13.0 ± 34

15.1 ± 19

12.8 ± 54

26.7 ± 70

19.3 ± .64

34

8

18.2 ± 79

13.8 ± 59

15.6 ± 16

13.3 ± .69

27.3 ± 87

20.2 ± 72

35

6

19.8 ± .68

14.4 ± .69

15.8 ± 23

13.5 ± 11

27.6 ± .15

21.4 ± .45

36

9

205 ± 67

14.9 ± .79

16.8 ± 43

139 ± 43

28.4 ± 57

21.7 ± 67

37

8

21.8 ± .77

16.2 ± 37

17.2 ± 75

14.6 ± .75

28.7 ± .13

23.2 ± 67

38

10

22.1 ± 00

16.9 ± 40

18.3 ± 20

14.8 ± 60

29.8 ± 84

24.1 ± 91

39

9

23.3 ± 65

17.0 ± 95

18.8 ± .96

14.5 ± 19

30.6 ± 24

26.8 ± .33

40

5

24.2 ± 15

18.6 ± 75

19.6 ± .46

15.5 ± 11

32.16 ±14

27.5 ± 59