. 2020 Aug 20;17(17):6066. doi: 10.3390/ijerph17176066

Table 3.

PM deposited mass (µg) in the respiratory tract (H: head; TB: tracheobronchial; P: pulmonary; total: H + TB + P) estimated across the micro-environments (MEs) visited by the commuter.

	ME	Winter				Summer
	ME	Head	TB	P	Total	Head	TB	P	Total
PM₁	Walking (LT)	0.284	0.108	0.215	0.607	0.356	0.136	0.270	0.762
	Walking (HT)	1.381	0.528	1.046	2.955	1.574	0.602	1.192	3.368
	Bike	0.666	0.255	0.505	1.426	0.465	0.178	0.352	0.994
	Car	0.231	0.088	0.175	0.495	0.136	0.052	0.103	0.291
	Underground	2.155	0.824	1.632	4.611	0.636	0.243	0.481	1.360
	Train	0.615	0.235	0.466	1.316	0.537	0.205	0.407	1.148
	Indoor	0.918	0.351	0.695	1.964	0.852	0.326	0.646	1.824
	Other	2.479	0.948	1.878	5.305	1.979	0.757	1.499	4.235
PM_2.5	Walking (LT)	1.233	0.217	0.524	1.975	1.400	0.246	0.595	2.241
	Walking (HT)	6.039	1.061	2.568	9.668	6.256	1.099	2.660	10.016
	Bike	2.961	0.520	1.259	4.741	1.929	0.339	0.820	3.088
	Car	0.923	0.162	0.393	1.478	0.553	0.097	0.235	0.885
	Underground	10.966	1.927	4.662	17.555	3.207	0.563	1.363	5.134
	Train	2.496	0.439	1.061	3.995	2.021	0.355	0.859	3.236
	Indoor	4.048	0.711	1.721	6.480	3.427	0.602	1.457	5.486
	Other	11.023	1.937	4.687	17.647	8.702	1.529	3.700	13.930
PM₄	Walking (LT)	2.189	0.287	0.494	2.971	2.454	0.322	0.554	3.329
	Walking (HT)	11.457	1.504	2.585	15.546	11.028	1.448	2.489	14.964
	Bike	5.814	0.763	1.312	7.889	3.509	0.461	0.792	4.761
	Car	1.510	0.198	0.341	2.049	0.930	0.122	0.210	1.261
	Underground	21.110	2.771	4.764	28.644	6.103	0.801	1.377	8.281
	Train	4.311	0.566	0.973	5.850	3.337	0.438	0.753	4.528
	Indoor	7.425	0.975	1.676	10.076	5.968	0.783	1.347	8.099
	Other	20.145	2.644	4.546	27.335	15.728	2.065	3.549	21.342
PM₁₀	Walking (LT)	5.857	0.214	0.043	6.114	5.355	0.196	0.039	5.590
	Walking (HT)	26.306	0.963	0.193	27.462	22.228	0.814	0.163	23.204
	Bike	13.825	0.506	0.101	14.432	7.196	0.263	0.053	7.513
	Car	2.524	0.092	0.018	2.635	1.609	0.059	0.012	1.679
	Underground	44.346	1.624	0.325	46.295	12.666	0.464	0.093	13.223
	Train	8.973	0.329	0.066	9.367	6.418	0.235	0.047	6.700
	Indoor	16.018	0.586	0.117	16.722	11.533	0.422	0.084	12.039
	Other	42.550	1.558	0.312	44.420	31.820	1.165	0.233	33.218