Fine Particulate Matter Concentrations during Independence Day Fireworks Display in the Lower Rio Grande Valley Region, South Texas, USA

Table 1

Basic statistics of hourly PM_2.5 concentrations during the study period at the various study locations and the CAMS sites.

Date	Sites	B1	B2	B3	B4	B5	E1	E2	E3	W1	W2	PI	C43	C80	C1046
July 03, 19 : 00—July 04, 18 : 59 hours	M	10.6	7.5	7.0	8.0	10.9	8.4	9.5	7.4	11.9	6.2	8.4	11.83	10.78	14.83
	STD	3.9	2.7	2.7	3.0	4.4	2.3	3.1	2.2	4.8	2.0	3.8	5.16	6.48	9.02
	MAX	19.1	13.6	14.0	14.6	22.2	11.8	14.8	10.7	26.1	9.9	16.2	24.00	28.00	52.00
	MIN	5.7	3.8	3.7	4.5	4.7	3.0	3.0	2.3	4.4	2.2	2.2	5.00	3.00	6.00
	Median	9.4	6.9	6.1	7.1	9.7	8.8	10.0	7.5	12.2	6.5	7.7	5.5	6	7.4
July 04, 19 : 00—July 05, 18 : 59 hours	M	13.6	9.6	8.8	10.4	14.8	12.5	14.1	11.1	17.2	7.9	10.8	19.54	16.54	18.17
	STD	4.9	3.5	2.9	3.6	7.1	3.2	4.1	2.7	10.6	2.3	4.7	5.96	3.82	5.38
	MAX	20.3	14.5	13.9	15.7	38.5	18.8	21.9	15.5	51.2	12.3	20.7	30.00	24.00	30.00
	MIN	6.7	4.9	5.1	5.5	6.3	7.3	8.3	6.8	8.3	4.3	6.3	6.00	11.00	9.00
	Median	11.8	8.9	8.3	9.7	15.2	12.1	13.9	11.3	14.2	7.8	8.6	6.65	7.7	6.9
July 05, 19 : 00—July 06, 18 : 59 hours	M	9.7	7.5	6.4	8.6	9.4	8.8	9.7	8.0	7.6	5.3	8.3	12.08	9.67	10.50
	STD	5.1	3.9	3.2	4.5	4.8	3.7	4.1	3.6	4.3	2.1	4.9	4.83	6.03	6.35
	MAX	19.1	15.3	10.8	19.3	18.2	17.7	20.1	15.3	13.8	8.0	19.9	24.00	22.00	23.00
	MIN	2.6	1.9	1.9	2.3	2.0	3.4	4.1	2.8	1.2	1.8	1.9	4.00	0.00	0.00
	Median	11.5	8.5	7.1	9.9	10.5	9.2	10.3	7.8	7.5	5.5	7.8	4.4	6.9	7.9