28

24

7
-

NUMBER DISTRIBUTION

20

16

Lb

12

+

ar

4 7
0

{
2

i
3

Litilit
4

5

6

TRACK DIAMETER
Figure

1.

7

910

1

20

30

(MICROMETERS)

Distribution of track
portion of film XXX.

598

8

|

sizes

in

the background

jt
40

Select target paragraph3