Table 2.

Plot of air sampling of the car's AC system inside the cabin when using either outside air (OA), inside air (IA), or variable use (VAR) of both types of air

time (min)	fresh air (outside) (OA)			re-circulating (inside) (IA)			variable (outside/inside) (VAR)
	TSM	DG-18	particle	TSM	DG-18	particle	air	TSM	DG-18	particle
no AC use	●	●	●	●	●	●		●	●	●
AC start	●	●	●	●	●	●	OA	●	●	●
1	●			●				●	●	●
2	●	●	●	●		●
3	●			●				●		●
4	●		●	●		●
5	●	●		●	●			●	●	●
6	●		●	●		●
7	●							●		●
8	●		●
9	●							●		●
10	●	●	●
11								●	●	●
13	●		●				IA	●	●	●
15								●		●
16	●		●
17								●	●	●
19							OA	●	●	●
20	●	●	●
21								●		●
outside the cabin	●	●	●	●	●	●		●	●	●

tryptic soy medium (TSM) indicator agar = evaluation of the total number of pathogens

dichloran glycerol (DG-18) agar = evaluation of the number of fungal spores