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Table 2 Summary statistics of daily emergency room visits for acute upper respiratory tract infections, and climate factors and air pollutants in Seoul, Korea, 2009 to 2013

From: Effect of diurnal temperature range on emergency room visits for acute upper respiratory tract infections

Daily data

Mean

SD

Min

P25

P50

P75

Max

Upper respiratory tract infections

290.02

193.29

74

174

227

331.5

1942

Climate factors

 Diurnal temperature range (°C)

8.05

2.75

1.10

6.10

8.10

10

17.6

 Average temperature (°C)

12.41

11.03

−14.5

3.3

13.9

22.7

31.8

 Relative humidity (%)

60.14

15.12

20

49

60

71

97

Air pollutants

 PM10 (μg/m3)

47.14

28.74

4.96

28.59

41.83

57.46

298

 Ozone (parts per billion)

20.6

11.1

1.8

11.7

19.3

28.0

71.1

  1. SD standard deviation, Min minimum, P percentile, Max maximum, PM10 particulate matter with a median aerometric diameter <10 microns