Table 2.

Distributions of three-year average levels of air pollutants, meteorological variables, and NDVI.

Variable	Min	10th percentile	25th percentile	Mean	Median	75th percentile	90th percentile	Max
Air Pollutant
Smoke PM2.5, μg/m3	0.01	0.16	0.23	0.43	0.37	0.54	0.71	7.78
Non-smoke PM2.5, μg/m3	1.73	5.17	6.97	8.38	8.57	9.93	11.14	17.08
NO2, ppb	1.72	7.88	9.73	13.14	12.19	15.37	19.51	49.93
Ozone, ppb	26.30	36.47	37.86	39.67	39.48	41.23	43.41	51.60
Meteorological Variable
Summer temperature, °C	6.39	18.75	21.09	23.38	23.64	26.23	27.71	33.54
Winter temperature, °C	−23.92	−7.03	−3.44	1.23	1.07	6.03	9.74	21.73
Summer precipitation, mm	0.00	1.41	2.49	3.28	3.34	4.11	4.83	11.8
Winter precipitation, mm	0.12	0.62	1.17	2.54	2.53	3.51	4.38	14.27
NDVI	0.110	0.311	0.404	0.510	0.526	0.633	0.678	0.803