Skip to main content
. 2014 Jul 29;13:61. doi: 10.1186/1476-069X-13-61

Table 2.

Descriptive statistics for daily meteorological and air pollutant levels (lag0) in Gothenburg, Sweden (1 January 1985–31 December 2010)

 
  
  
  
  
 Percentiles
  
  No. days missing data Mean SD Range 25 th 50 th 75 th IQR
All year (9496 days)
  
  
  
  
  
  
  
  
Temperature (°C)
 146
 8.5
 7.2
 −22.0 − 26.2
 3.3
 8.4
 14.4
 11.1
Relative humidity (%)
 637
 77.4
 12.5
 15.0 − 99.9
 69.8
 79.4
 87.1
 17.3
PM10 (μg.m−3)
 2004
 15.9
 9.2
 5 − 78.1
 9.6
 14.0
 20.0
 10.4
PMion (μg.m−3)
 899
 6.6
 5.6
 0.4 − 63.6
 3.0
 5.0
 8.4
 5.4
PMrest (μg.m−3)
 2373
 10.0
 8.0
 0.0 − 70.2
 4.2
 8.2
 13.2
 9.0
SO42− (μg.m−3)
 262
 1.0
 1.0
 0.0 − 18.5
 0.4
 0.7
 1.2
 0.8
Total NO3− (μg.m−3)
 746
 0.6
 0.7
 0.0 − 12.6
 0.2
 0.4
 0.8
 0.6
Total NH4+ (μg.m−3)
 696
 1.0
 1.0
 0.0 − 12.3
 0.4
 0.7
 1.3
 0.9
PM2.5 (μg.m−3)
 7718
 7.7
 4.5
 0.6 − 40.9
 4.7
 6.7
 9.3
 4.6
Soot (μg.m−3)
 319
 2.6
 3.6
 0.8 − 48.2
 0.8
 1.2
 2.9
 1.7
Warm period (4758 days)
  
  
  
  
  
  
  
  
Temperature (°C)
 47
 13.8
 4.6
 −1.1 − 26.2
 10.9
 14.3
 16.9
 6.1
Relative humidity (%)
 304
 72.2
 12.3
 32.0 − 99.0
 64.7
 73.5
 81.2
 16.5
PM10 (μg.m−3)
 973
 15.4
 8.7
 5 − 76.0
 9.5
 13.5
 19.0
 9.5
PMion (μg.m−3)
 433
 6.5
 5.1
 0.5 − 63.6
 3.2
 5.0
 8.3
 5.1
PMrest (μg.m−3)
 1106
 9.5
 7.3
 0.0 − 65.0
 4.3
 7.8
 12.4
 8.0
SO42− (μg.m−3)
 126
 1.0
 0.9
 0.0 − 13.3
 0.4
 0.7
 1.2
 0.8
Total NO3− (μg.m−3)
 347
 0.6
 0.7
 0.0 − 9.9
 0.2
 0.4
 0.7
 0.5
Total NH4+ (μg.m−3)
 333
 1.1
 0.9
 0.0 − 9.6
 0.5
 0.8
 1.3
 0.8
PM2.5 (μg.m−3)
 3845
 7.2
 4.2
 0.9 − 35.6
 4.5
 6.3
 8.6
 4.1
Soot (μg.m−3)
 168
 1.7
 2.1
 0.8 − 23.7
 0.8
 0.8
 1.9
 1.1
Cold period (4738 days)
  
  
  
  
  
  
  
  
Temperature (°C)
 99
 3.1
 5.0
 −22.0 − 16.3
 0.2
 3.5
 6.4
 6.2
Relative humidity (%)
 333
 82.7
 10.3
 15.0 − 99.9
 77.4
 84.8
 90.1
 12.7
PM10 (μg.m−3)
 1031
 16.6
 9.7
 5 − 78.1
 9.7
 14.6
 20.8
 11.1
PMion (μg.m−3)
 466
 6.7
 6.0
 0.4 − 63.6
 2.8
 5.0
 8.6
 5.8
PMrest (μg.m−3)
 1267
 10.6
 8.6
 0.0 − 70.2
 4.0
 8.6
 14.1
 10.1
SO42− (μg.m−3)
 136
 1.1
 1.1
 0.0 − 18.5
 0.4
 0.7
 1.3
 0.9
Total NO3− (μg.m−3)
 399
 0.6
 0.7
 0.0 − 12.6
 0.2
 0.4
 0.8
 0.6
Total NH4+ (μg.m−3)
 363
 1.0
 1.1
 0.0 − 12.3
 0.3
 0.6
 1.3
 1.0
PM2.5 (μg.m−3)
 3873
 8.2
 4.8
 0.6 − 40.9
 5.0
 7.0
 10.0
 5.0
Soot (μg.m−3) 151 3.5 4.5 0.8 − 48.2 0.8 2.0 4.2 2.2

SD: Standard deviation, IQR: Interquartile range.

Warm period: April − September, cold period: October − March.

PM10 and PMrest available from 1990–2010 and PM2.5 available from 2006–2010.