Table A3.

Predicted relative NOx concentration using the SVR model.

Date	Sample1	Sample2	Sample3	Sample4	Sample5	Sample6
9/02/2021	0	0	0	0	0	0
16/02/2021	0.011	0.014	0.014	0.017	0.006	0.013
23/02/2021	0.028	0.025	0.034	0.028	0.012	0.014
1/03/2021	0.032	0.022	0.041	0.036	0.014	0.021
10/03/2021	0.037	0.024	0.043	0.028	0.013	1.126
15/03/2021	0.039	0.026	0.048	0.025	0.012	1.113
22/03/2021	0.056	0.029	0.055	0.023	0.012	1.134
24/03/2021	0.054	0.032	0.050	0.023	0.009	1.144
29/03/2021	0.056	0.035	0.060	0.023	0.012	1.139
7/04/2021	0.066	0.035	0.066	0.021	0.012	1.119
12/04/2021	0.077	0.037	0.063	0.024	0.013	1.127