Table 2.

Setup of the experimental measurement in the carriage.

Location of measurement point	Height of measurement point
Point 1:	Z1 = 1.1 m
X = 3.1 m, Y = 1.25 m	Z2 = 1.7 m
Point 2:	Z3 = 1.9 m
X = 7.8 m, Y = 1.25 m	Z4 = 2.1 m
Measurement instruments	Measurement period
Velocity meter (TSI 9515)	8:00 a.m.-9:00 a.m. on 15 July with a measurement interval of 5 min
Indoor air quality meter (TSI 7525)