Pic. 5
10 -
\CjIntrcvert
Smokers
Intrc vert
20
EX t ra vert
25
-Ib are @s
Extra jert
Non-Snokers
30
35
0 30 60 90 120 150
Time at Work (in Minutcs)
PERMILMANCE (SMOIERS V. NON-SIPLORERS)
1%.j
BATCo, document for Province of British Columbia 22 April 1999