Figure 15: Mean hours when O3 pollution was ‘Moderate’ or higher for urban background sites, 1992 to 2023
Updated 30 April 2024
Download CSV 8.81 KB
Site type | Year | Number of sites | Daily Air Quality Index | Mean number of hours per site |
---|---|---|---|---|
1992 | Urban Background | 4 | mod_4 | 12 |
1993 | Urban Background | 8 | mod_4 | 10.5 |
1994 | Urban Background | 13 | mod_4 | 21.38461538 |
1995 | Urban Background | 12 | mod_4 | 53.75 |
1996 | Urban Background | 18 | mod_4 | 38.5 |
1997 | Urban Background | 31 | mod_4 | 35.12903226 |
1998 | Urban Background | 42 | mod_4 | 19.80952381 |
1999 | Urban Background | 42 | mod_4 | 61.47619048 |
2000 | Urban Background | 41 | mod_4 | 29.48780488 |
2001 | Urban Background | 43 | mod_4 | 40.13953488 |
2002 | Urban Background | 45 | mod_4 | 27.73333333 |
2003 | Urban Background | 47 | mod_4 | 104.5744681 |
2004 | Urban Background | 50 | mod_4 | 44.68 |
2005 | Urban Background | 49 | mod_4 | 38.14285714 |
2006 | Urban Background | 48 | mod_4 | 102.7708333 |
2007 | Urban Background | 45 | mod_4 | 48.26666667 |
2008 | Urban Background | 43 | mod_4 | 96.11627907 |
2009 | Urban Background | 41 | mod_4 | 34.31707317 |
2010 | Urban Background | 42 | mod_4 | 19.5 |
2011 | Urban Background | 43 | mod_4 | 49.11627907 |
2012 | Urban Background | 42 | mod_4 | 35.19047619 |
2013 | Urban Background | 41 | mod_4 | 40.46341463 |
2014 | Urban Background | 42 | mod_4 | 32.78571429 |
2015 | Urban Background | 42 | mod_4 | 22.64285714 |
2016 | Urban Background | 41 | mod_4 | 39.34146341 |
2017 | Urban Background | 41 | mod_4 | 21.02439024 |
2018 | Urban Background | 42 | mod_4 | 93.38095238 |
2019 | Urban Background | 39 | mod_4 | 48.15384615 |
2020 | Urban Background | 39 | mod_4 | 93.74358974 |
2021 | Urban Background | 38 | mod_4 | 33.81578947 |
2022 | Urban Background | 40 | mod_4 | 74.1 |
2023 | Urban Background | 52 | mod_4 | 77.82692308 |
1992 | Urban Background | 4 | mod_5 | 1 |
1993 | Urban Background | 8 | mod_5 | 3.625 |
1994 | Urban Background | 13 | mod_5 | 7.923076923 |
1995 | Urban Background | 12 | mod_5 | 31.16666667 |
1996 | Urban Background | 18 | mod_5 | 19.61111111 |
1997 | Urban Background | 31 | mod_5 | 10.5483871 |
1998 | Urban Background | 42 | mod_5 | 2.714285714 |
1999 | Urban Background | 42 | mod_5 | 21.38095238 |
2000 | Urban Background | 41 | mod_5 | 7.536585366 |
2001 | Urban Background | 43 | mod_5 | 14.81395349 |
2002 | Urban Background | 45 | mod_5 | 4.933333333 |
2003 | Urban Background | 47 | mod_5 | 42.87234043 |
2004 | Urban Background | 50 | mod_5 | 13.42 |
2005 | Urban Background | 49 | mod_5 | 10 |
2006 | Urban Background | 48 | mod_5 | 50.08333333 |
2007 | Urban Background | 45 | mod_5 | 6.488888889 |
2008 | Urban Background | 43 | mod_5 | 22.95348837 |
2009 | Urban Background | 41 | mod_5 | 3.829268293 |
2010 | Urban Background | 42 | mod_5 | 3.904761905 |
2011 | Urban Background | 43 | mod_5 | 8.093023256 |
2012 | Urban Background | 42 | mod_5 | 8.428571429 |
2013 | Urban Background | 41 | mod_5 | 5.804878049 |
2014 | Urban Background | 42 | mod_5 | 2.571428571 |
2015 | Urban Background | 42 | mod_5 | 5 |
2016 | Urban Background | 41 | mod_5 | 7.146341463 |
2017 | Urban Background | 41 | mod_5 | 5.048780488 |
2018 | Urban Background | 42 | mod_5 | 20.88095238 |
2019 | Urban Background | 39 | mod_5 | 22.87179487 |
2020 | Urban Background | 39 | mod_5 | 27.48717949 |
2021 | Urban Background | 38 | mod_5 | 6.236842105 |
2022 | Urban Background | 40 | mod_5 | 27.725 |
2023 | Urban Background | 52 | mod_5 | 28.86538462 |
1992 | Urban Background | 4 | mod_6 | 0 |
1993 | Urban Background | 8 | mod_6 | 2.625 |
1994 | Urban Background | 13 | mod_6 | 3.461538462 |
1995 | Urban Background | 12 | mod_6 | 12.58333333 |
1996 | Urban Background | 18 | mod_6 | 8.555555556 |
1997 | Urban Background | 31 | mod_6 | 3.903225806 |
1998 | Urban Background | 42 | mod_6 | 0.380952381 |
1999 | Urban Background | 42 | mod_6 | 8.047619048 |
2000 | Urban Background | 41 | mod_6 | 1.12195122 |
2001 | Urban Background | 43 | mod_6 | 4.069767442 |
2002 | Urban Background | 45 | mod_6 | 0.866666667 |
2003 | Urban Background | 47 | mod_6 | 18.5106383 |
2004 | Urban Background | 50 | mod_6 | 2.7 |
2005 | Urban Background | 49 | mod_6 | 2.387755102 |
2006 | Urban Background | 48 | mod_6 | 24.29166667 |
2007 | Urban Background | 45 | mod_6 | 0.444444444 |
2008 | Urban Background | 43 | mod_6 | 3.255813953 |
2009 | Urban Background | 41 | mod_6 | 1.487804878 |
2010 | Urban Background | 42 | mod_6 | 0.547619048 |
2011 | Urban Background | 43 | mod_6 | 0.953488372 |
2012 | Urban Background | 42 | mod_6 | 1.476190476 |
2013 | Urban Background | 41 | mod_6 | 1.609756098 |
2014 | Urban Background | 42 | mod_6 | 0.071428571 |
2015 | Urban Background | 42 | mod_6 | 1.714285714 |
2016 | Urban Background | 41 | mod_6 | 0.390243902 |
2017 | Urban Background | 41 | mod_6 | 1.024390244 |
2018 | Urban Background | 42 | mod_6 | 3.928571429 |
2019 | Urban Background | 39 | mod_6 | 6.256410256 |
2020 | Urban Background | 39 | mod_6 | 11.17948718 |
2021 | Urban Background | 38 | mod_6 | 0.263157895 |
2022 | Urban Background | 40 | mod_6 | 10.15 |
2023 | Urban Background | 52 | mod_6 | 6.442307692 |
1992 | Urban Background | 4 | high_7 | 0 |
1993 | Urban Background | 8 | high_7 | 0.125 |
1994 | Urban Background | 13 | high_7 | 1.461538462 |
1995 | Urban Background | 12 | high_7 | 4.416666667 |
1996 | Urban Background | 18 | high_7 | 1.666666667 |
1997 | Urban Background | 31 | high_7 | 1.806451613 |
1998 | Urban Background | 42 | high_7 | 0.142857143 |
1999 | Urban Background | 42 | high_7 | 2.380952381 |
2000 | Urban Background | 41 | high_7 | 0.097560976 |
2001 | Urban Background | 43 | high_7 | 1.139534884 |
2002 | Urban Background | 45 | high_7 | 0.311111111 |
2003 | Urban Background | 47 | high_7 | 6.319148936 |
2004 | Urban Background | 50 | high_7 | 0.52 |
2005 | Urban Background | 49 | high_7 | 0.551020408 |
2006 | Urban Background | 48 | high_7 | 10.1875 |
2007 | Urban Background | 45 | high_7 | 0 |
2008 | Urban Background | 43 | high_7 | 0.186046512 |
2009 | Urban Background | 41 | high_7 | 0.219512195 |
2010 | Urban Background | 42 | high_7 | 0 |
2011 | Urban Background | 43 | high_7 | 0 |
2012 | Urban Background | 42 | high_7 | 0.047619048 |
2013 | Urban Background | 41 | high_7 | 0.024390244 |
2014 | Urban Background | 42 | high_7 | 0 |
2015 | Urban Background | 42 | high_7 | 0.428571429 |
2016 | Urban Background | 41 | high_7 | 0 |
2017 | Urban Background | 41 | high_7 | 0.219512195 |
2018 | Urban Background | 42 | high_7 | 0.619047619 |
2019 | Urban Background | 39 | high_7 | 1.58974359 |
2020 | Urban Background | 39 | high_7 | 1.974358974 |
2021 | Urban Background | 38 | high_7 | 0 |
2022 | Urban Background | 40 | high_7 | 1.45 |
2023 | Urban Background | 52 | high_7 | 0.769230769 |
1992 | Urban Background | 4 | high_8 | 0 |
1993 | Urban Background | 8 | high_8 | 0 |
1994 | Urban Background | 13 | high_8 | 0 |
1995 | Urban Background | 12 | high_8 | 0.25 |
1996 | Urban Background | 18 | high_8 | 0.111111111 |
1997 | Urban Background | 31 | high_8 | 0.225806452 |
1998 | Urban Background | 42 | high_8 | 0 |
1999 | Urban Background | 42 | high_8 | 0.285714286 |
2000 | Urban Background | 41 | high_8 | 0 |
2001 | Urban Background | 43 | high_8 | 0.093023256 |
2002 | Urban Background | 45 | high_8 | 0 |
2003 | Urban Background | 47 | high_8 | 0.765957447 |
2004 | Urban Background | 50 | high_8 | 0 |
2005 | Urban Background | 49 | high_8 | 0 |
2006 | Urban Background | 48 | high_8 | 1.604166667 |
2007 | Urban Background | 45 | high_8 | 0 |
2008 | Urban Background | 43 | high_8 | 0 |
2009 | Urban Background | 41 | high_8 | 0 |
2010 | Urban Background | 42 | high_8 | 0 |
2011 | Urban Background | 43 | high_8 | 0 |
2012 | Urban Background | 42 | high_8 | 0 |
2013 | Urban Background | 41 | high_8 | 0 |
2014 | Urban Background | 42 | high_8 | 0 |
2015 | Urban Background | 42 | high_8 | 0 |
2016 | Urban Background | 41 | high_8 | 0 |
2017 | Urban Background | 41 | high_8 | 0 |
2018 | Urban Background | 42 | high_8 | 0 |
2019 | Urban Background | 39 | high_8 | 0.076923077 |
2020 | Urban Background | 39 | high_8 | 0 |
2021 | Urban Background | 38 | high_8 | 0 |
2022 | Urban Background | 40 | high_8 | 0 |
2023 | Urban Background | 52 | high_8 | 0 |
1992 | Urban Background | 4 | high_9 | 0 |
1993 | Urban Background | 8 | high_9 | 0 |
1994 | Urban Background | 13 | high_9 | 0 |
1995 | Urban Background | 12 | high_9 | 0 |
1996 | Urban Background | 18 | high_9 | 0 |
1997 | Urban Background | 31 | high_9 | 0 |
1998 | Urban Background | 42 | high_9 | 0 |
1999 | Urban Background | 42 | high_9 | 0.095238095 |
2000 | Urban Background | 41 | high_9 | 0 |
2001 | Urban Background | 43 | high_9 | 0 |
2002 | Urban Background | 45 | high_9 | 0 |
2003 | Urban Background | 47 | high_9 | 0 |
2004 | Urban Background | 50 | high_9 | 0 |
2005 | Urban Background | 49 | high_9 | 0 |
2006 | Urban Background | 48 | high_9 | 0.125 |
2007 | Urban Background | 45 | high_9 | 0 |
2008 | Urban Background | 43 | high_9 | 0 |
2009 | Urban Background | 41 | high_9 | 0 |
2010 | Urban Background | 42 | high_9 | 0 |
2011 | Urban Background | 43 | high_9 | 0 |
2012 | Urban Background | 42 | high_9 | 0 |
2013 | Urban Background | 41 | high_9 | 0 |
2014 | Urban Background | 42 | high_9 | 0 |
2015 | Urban Background | 42 | high_9 | 0 |
2016 | Urban Background | 41 | high_9 | 0 |
2017 | Urban Background | 41 | high_9 | 0 |
2018 | Urban Background | 42 | high_9 | 0 |
2019 | Urban Background | 39 | high_9 | 0 |
2020 | Urban Background | 39 | high_9 | 0 |
2021 | Urban Background | 38 | high_9 | 0 |
2022 | Urban Background | 40 | high_9 | 0 |
2023 | Urban Background | 52 | high_9 | 0 |
1992 | Urban Background | 4 | vhigh_10 | 0 |
1993 | Urban Background | 8 | vhigh_10 | 0 |
1994 | Urban Background | 13 | vhigh_10 | 0 |
1995 | Urban Background | 12 | vhigh_10 | 0 |
1996 | Urban Background | 18 | vhigh_10 | 0 |
1997 | Urban Background | 31 | vhigh_10 | 0 |
1998 | Urban Background | 42 | vhigh_10 | 0 |
1999 | Urban Background | 42 | vhigh_10 | 0 |
2000 | Urban Background | 41 | vhigh_10 | 0 |
2001 | Urban Background | 43 | vhigh_10 | 0 |
2002 | Urban Background | 45 | vhigh_10 | 0 |
2003 | Urban Background | 47 | vhigh_10 | 0 |
2004 | Urban Background | 50 | vhigh_10 | 0 |
2005 | Urban Background | 49 | vhigh_10 | 0 |
2006 | Urban Background | 48 | vhigh_10 | 0 |
2007 | Urban Background | 45 | vhigh_10 | 0 |
2008 | Urban Background | 43 | vhigh_10 | 0 |
2009 | Urban Background | 41 | vhigh_10 | 0 |
2010 | Urban Background | 42 | vhigh_10 | 0 |
2011 | Urban Background | 43 | vhigh_10 | 0 |
2012 | Urban Background | 42 | vhigh_10 | 0 |
2013 | Urban Background | 41 | vhigh_10 | 0 |
2014 | Urban Background | 42 | vhigh_10 | 0 |
2015 | Urban Background | 42 | vhigh_10 | 0 |
2016 | Urban Background | 41 | vhigh_10 | 0 |
2017 | Urban Background | 41 | vhigh_10 | 0 |
2018 | Urban Background | 42 | vhigh_10 | 0 |
2019 | Urban Background | 39 | vhigh_10 | 0 |
2020 | Urban Background | 39 | vhigh_10 | 0 |
2021 | Urban Background | 38 | vhigh_10 | 0 |
2022 | Urban Background | 40 | vhigh_10 | 0 |
2023 | Urban Background | 52 | vhigh_10 | 0 |