| VIAQ | vehicle interior air quality |
| VOCs | volatile organic compounds |
| TVOC | total volatile organic compounds |
| CS | concentrations of VOCs and TVOC measured inside the vehicles in sunshine condition |
| CE | concentrations of VOCs and TVOC measured inside the vehicles in environment test chamber |
| CV | the limited values of VOCs specified in the standard GB/T 27630-2011 |
| CD(0–30min) | concentrations of VOCs and TVOC measured inside the vehicles under driving conditions of 0–30 min |
| CD(60–90min) | concentrations of VOCs and TVOC measured inside the vehicles under driving conditions of 60–90 min |
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