Figure 2.
Time line for booth session. Sequence of changes: 1 and 2, opening and closing of side door of booth; 3, exhaust fan on low speed; 4, opening and closing of side door of booth; 5, exhaust fan on high speed; 6, exhaust fan off.
Time line for booth session. Sequence of changes: 1 and 2, opening and closing of side door of booth; 3, exhaust fan on low speed; 4, opening and closing of side door of booth; 5, exhaust fan on high speed; 6, exhaust fan off.