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Table 1 Descriptive statistics of daily pollutant levels, death counts, and meteorological variables from 2000 to 2004

From: Air pollution and mortality in the Canary Islands: a time-series analysis

 

Las Palmas de Gran Canaria

Santa Cruz de Tenerife

 

Mean

P50

sd

min

max

Mean

P50

sd

min

max

Air pollutant concentrations

          

▪ PM10-24 h (μg/m3)

37.7

29.2

40.6

8.7

612.4

42.3

31.7

41.7

13

622

▪ PM25-24 h(a) (μg/m3)

16.4

13

15.2

2.4

210.6

15.2

11.4

14.3

3.5

227.6

▪ SO2-24 h (μg/m3)

8.1

6.9

4.2

1.5

44.4

14.1

10

12.6

2.3

145.9

▪ NO2-24 h (μg/m3)

45.8

46.4

14.8

7.2

104.7

30.3

26.9

16.4

5.4

93.3

▪ CO-8 h (μg/m3)

0.9

0.7

0.5

0.1

6.8

1.1

1.0

0.7

0.1

4.5

▪ O3-8 h (μg/m3)(b)

37.9

36.6

17.4

4.2

114.8

53.0

52.2

15.1

15.0

101.4

Daily death counts

          

▪ Total

7.4

7.0

2.8

0.0

19.0

4.4

4.0

2.2

0.0

14.0

▪ Heart disease

1.7

2.0

1.3

0.0

9.0

0.9

1.0

1.0

0.0

6.0

▪ Respiratory

0.7

0.0

0.9

0.0

5.0

0.4

0.0

0.6

0.0

4.0

Meteorological measures

          

▪ Mean Temperature (°C)

21.1

21

2.6

14.4

32.5

21.3

20.8

3.0

13.9

33.6

▪ Relative humidity (%)

65.5

65.8

9.4

22.3

95

62.2

61.8

7.6

31.3

85.8

▪ Barometric pressure (mbar)

1012.6

1008.7

3.45

986.3

1023.7

1014.3

1014.2

3.60

998.8

1026.6

  1. (a) PM2.5 only from 2001 to 2004
  2. (b) Entire annual period