Skip to main content

Table 1 Statistical summary of daily air pollutants, meteorological factors and outpatient visits in Fujian, China, 2016–2018

From: Temporal cross-correlations between air pollutants and outpatient visits for respiratory and circulatory system diseases in Fuzhou, China

Variable Mean ± SD Minimum Percentile Maximum
25th 50th 75th
Total
 Respiratory disease 82 ± 32 1 60 83 104 180
 Upper respiratory disease 49 ± 20 0 35 49 63 113
 Lower respiratory disease 16 ± 8 0 10 16 22 47
 Circulatory disease 174 ± 83 0 105 191 231 382
 NO2 (μg/m3) 27.38 ± 11.18 3.83 19.55 25.14 33.14 79.57
 O3-8h (μg/m3) 89.60 ± 33.94 16.71 64.02 87.36 112.00 208.43
 PM2.5 (μg/m3) 26.07 ± 13.14 2.43 16.57 23.86 32.71 83.57
 PM10 (μg/m3) 49.68 ± 22.62 7.43 33.33 46.49 63.89 167.57
 Temperature (°C) 21.54 ± 7.08 2.60 15.60 22.00 28.00 32.80
 Relative humidity (%) 72 ± 11 33 65 72 79 99
 Air pressure (hpa) 1010 ± 8 983 1003 1009 1016 1034
Cold season
 Respiratory disease 91 ± 34 1 70 96 114 166
 Upper respiratory disease 55 ± 22 0 43 56 70 106
 Under respiratory disease 18 ± 9 0 12 19 25 46
 Circulatory disease 175 ± 84 0 108 195 236 367
 NO2 (μg/m3) 33.11 ± 11.55 10.43 24.57 31.72 41.34 79.57
 O3-8h (μg/m3) 74.21 ± 26.59 16.71 53.66 73.72 92.97 168.14
 PM2.5 (μg/m3) 30.42 ± 14.44 2.43 19.86 28.14 38.50 82.14
 PM10 (μg/m3) 52.28 ± 23.48 7.43 33.72 50.79 68.54 134.14
 Temperature (°C) 14.66 ± 4.11 2.60 11.60 14.30 14.30 24.70
 Relative humidity (%) 72 ± 12 33 63 73 80 98
 Air pressure (hpa) 1017 ± 6 1001 1013 1016 1021 1034
Warm season
 Respiratory disease 76 ± 29 11 56 77 95 180
 Upper respiratory disease 45 ± 18 5 33 44 56 113
 Under respiratory disease 15 ± 8 0 10 15 20 47
 Circulatory disease 173 ± 81 13 103 189 229 382
 NO2 (μg/m3) 23.32 ± 8.92 3.83 17.74 22.00 27.20 73.29
 O3-8h (μg/m3) 100.48 ± 34.39 30.00 75.04 99.24 124.14 208.43
 PM2.5 (μg/m3) 22.99 ± 11.17 4.86 15.14 21.00 28.86 83.57
 PM10 (μg/m3) 47.84 ± 21.82 10.29 33.04 44.14 60.03 167.57
 Temperature (°C) 26 ± 4 14.50 23.53 27.10 27.10 32.80
 Relative humidity (%) 72 ± 11 41 65 72 79 99
 Air pressure (hpa) 1005 ± 6 983 1001 1004 1008 1022
O3concentrations exceeding 100 μg/m3
 Respiratory disease 82 ± 30 12 61 84 102 163
 Upper respiratory disease 49 ± 19 7 36 47 62 103
 Lower respiratory disease 17 ± 8 0 11 17 23 47
 Circulatory disease 181 ± 81 18 115.5 194.5 238.75 382
 NO2 (μg/m3) 25.16 ± 7.56 10.14 20.14 23.745 28.2825 56.14
 O3-8h (μg/m3) 126.36 ± 20.89 100.14 109.86 121.71 136.66 208.43
 PM2.5 (μg/m3) 29.81 ± 10.97 6.43 21.74 27.86 35.57 70.43
 PM10 (μg/m3) 59.81 ± 19.55 15.29 45.895 57.43 70.86 164.14
 Temperature (°C) 24.36 ± 6.46 8.5 19.75 26 26 32.8
 Relative humidity (%) 66 ± 9 41 60 66 72 96
 Air pressure (hpa) 1007 ± 7 992 1002 1006 1013 1031