Table 5. Concentration Values of CO and NO₂ at Different Times.

		CO		NO2
serial number	moment (min)	concentration (mg/m3)	absolute slope	concentration (mg/m3)	absolute slope
1	1.00	63.080	23.463	0.418	0.160
2	2.25	33.751	16.545	0.223	0.123
3	3.50	21.719	7.740	0.114	0.063
4	4.75	14.402	6.547	0.061	0.032
5	6.00	5.350	7.242	0.031	0.023
6	7.00	2.770	0.712	0.018	0.004
7	10.25	0.456	0.415	0.003	0.003
8	13.50	0.071	0.068	4.340 × 10–4	4.170 × 10–4
9	16.75	0.011	0.011	6.842 × 10–5	6.513 × 10–5
10	20.00	0.002	0.003	1.074 × 10–5	1.775 × 10–5