8 Dec 2020	Invitation to the 21st VIAQ informal group session	VIAQ-21-01	2020-12-08
14 Dec 2020	Draft agenda for the 21st VIAQ informal group session	VIAQ-21-02/Rev.1	2020-12-14
5 Jan 2021	VIAQ informal group progress report	VIAQ-21-03	2021-01-05
4 Jan 2021	Influence of air-conditioning on/off on PM2.5 in-cabin measurement results (Mahle)	VIAQ-21-04	2021-01-04
4 Jan 2021	Behavior of carbon monoxide, nitrogen oxides, and ozone in vehicle cabin with a passenger (UC Riverside and UC Irvine)	VIAQ-21-05	2021-01-04
7 Jan 2021	Progress update on measuring cabin particle ingress and CO2 buildup (Emissions Analytics)	VIAQ-21-06	2021-01-07
7 Jan 2021	Dynamic and stationary measurement of in-vehicle PM2.5 (CabinAir)	VIAQ-21-07	2021-01-07
17 Feb 2021	Minutes of the 21st VIAQ informal group session	VIAQ-21-08	2021-02-17