Table 1.

Descriptive statistics of LAC concentrations (μg m⁻³) at the city centre and UTFPR sites.

Site	Statistics	Weekday		Saturday		Sunday
		BrC	BC	BrC	BC	BrC	BC
City centre	Mean	2.07	1.79	1.78	1.53	1.42	1.17
	Standard Deviation	1.81	1.60	1.52	1.36	1.12	0.89
	Median	1.72	1.50	1.45	1.22	1.09	0.91
	5th percentile	0.37	0.33	0.34	0.30	0.28	0.24
	25th percentile	1.04	0.90	0.95	0.81	0.74	0.64
	75th percentile	2.69	2.30	2.14	1.44	1.78	1.84
	95th percentile	4.84	4.16	3.94	3.39	3.54	2.81
UTFPR	Mean	0.93	0.76	0.82	0.67	0.81	0.68
	Standard Deviation	1.16	1.03	0.69	0.52	1.77	1.69
	Median	0.68	0.54	0.64	0.55	0.50	0.42
	5th percentile	0.16	0.16	0.09	0.13	0.14	0.13
	25th percentile	0.39	0.33	0.34	0.29	0.30	0.26
	75th percentile	1.10	0.87	1.10	0.90	0.98	0.76
	95th percentile	2.29	1.84	1.98	1.46	2.10	1.69