Using time/activity patterns what is the estimated daily secondhand smoke exposure of a population of Daily activity patterns over a 24 hour period are:

83% of their time indoors - 50% in home, 33% at work, 25% at their desk(office), 8% in meetings, and 8% in transportation. The majority of the community is at home between 19:00 and 8:00 and at work between 8:30 and 16:30.

Each member comes into contact with Secondhand Smoke 7 times each week, during a 1year period the exposure factor would be: EF = 0.99