PM10 and O3 concentration data set
| Pollutant | Year | Number of operating stations | Operating stations with valid data | Minimum | Maximum | Annual average | SD |
|---|---|---|---|---|---|---|---|
| PM10 | 1999 | 7 | 2 | 44 | 47 | 45.5 | 2.121 |
| 2000 | 7 | 7 | 33 | 47 | 41.6 | 5.127 | |
| 2001 | 7 | 4 | 38 | 46 | 42.7 | 3.695 | |
| 2002 | 8 | 4 | 25 | 39 | 33.3 | 5.909 | |
| 2003 | 6 | 6 | 23 | 39 | 30.2 | 6.853 | |
| 2004 | 6 | 4 | 33 | 52 | 39.5 | 8.583 | |
| 2005 | 6 | 6 | 31 | 49 | 36.2 | 6.911 | |
| 2006 | 6 | 5 | 30 | 41 | 36.4 | 4.393 | |
| 2007 | 5 | 5 | 20 | 31 | 25.6 | 4.159 | |
| 2008 | 6 | 4 | 22 | 26 | 23.3 | 1.893 | |
| O3 | 1999 | 4 | 4 | 89 | 134 | 111.5 | 19.638 |
| 2000 | 4 | 4 | 101 | 152 | 121.3 | 21.930 | |
| 2001 | 4 | 2 | 122 | 130 | 126 | 5.657 | |
| 2002* | 3 | 1 | 126 | 168.7 | 147.3 | 30.169 | |
| 2003 | 4 | 3 | 165 | 174 | 168.7 | 4.726 | |
| 2004 | 3 | 3 | 142 | 164 | 149.7 | 12.423 | |
| 2005 | 3 | 3 | 146 | 159 | 154.7 | 7.506 | |
| 2006 | 3 | 3 | 138 | 151 | 142.7 | 7.234 | |
| 2007 | 3 | 3 | 137 | 146 | 143 | 5.196 | |
| 2008 | 3 | 3 | 138 | 160 | 149 | 11 |
*In 2002 1 of 3 stations could provide valid data so it was decided to use the average of the years 2001 and 2003.
PM, particulate matter.