Clean_Air 00Z wind_speed 1986 - 8.9 8.1 7.6 9.4 5.5 8.0 10.1 - - 7.2 7.1 1987 5.3 7.7 8.4 7.5 8.0 8.3 - - - - 6.0 4.3 1988 7.4 6.7 8.1 7.2 6.8 9.0 6.7 7.4 7.8 7.3 5.9 5.8 1989 4.2 6.0 7.9 8.2 7.9 8.4 9.6 10.5 10.0 6.1 7.5 8.3 1990 6.9 6.9 7.4 7.9 - 12.0 9.8 8.9 - - - 8.8 1991 6.0 8.0 7.6 7.0 7.3 8.3 9.8 8.1 8.9 8.3 7.5 5.3 1992 4.9 6.8 7.9 7.8 5.9 11.2 5.7 8.5 9.6 7.6 8.2 3.9 1993 5.7 6.8 8.7 6.4 7.9 7.1 5.1 6.2 7.2 - - - 1994 - 6.1 8.8 5.9 8.5 8.7 7.2 9.4 9.5 8.5 6.5 4.5 1995 3.6 7.0 7.8 8.1 8.9 6.3 8.9 7.8 5.6 10.1 8.1 4.7 1996 4.9 6.6 7.3 7.0 7.0 8.4 10.8 10.0 7.6 8.6 8.6 7.9 1997 5.6 5.9 7.2 9.2 9.2 6.9 6.2 9.4 7.7 4.9 9.8 5.9 1998 6.0 5.7 6.9 6.6 8.3 6.5 8.6 6.6 6.3 6.9 9.6 5.0 1999 5.9 5.2 6.0 7.7 7.8 6.9 6.5 8.8 6.6 6.8 5.1 5.1 2000 6.9 5.9 6.2 7.1 8.2 8.1 9.4 7.5 7.9 9.1 10.8 6.6 2001 5.5 5.2 8.7 7.9 8.2 8.8 8.1 8.9 9.4 8.6 8.7 8.4 2002 8.7 8.0 9.7 9.0 8.7 6.9 11.0 10.7 5.5 7.9 6.4 5.3 2003 6.3 6.0 8.2 8.2 8.6 9.7 9.5 11.3 10.1 10.1 6.7 8.0 2004 6.9 8.9 8.7 9.5 10.4 9.2 - 10.9 - 8.5 8.0 8.0 2005 - - - - - - - - - - - - 2006 - - - - - - - - - - - - 2007 - - - - - - - - - - - - 2008 - - - - - - - - - - - - 2009 - - - - - - - - - - - - 2010 - - - - - - - - - - - - 2011 - - - - - - - - - - - - 2012 - - - - - - - - - - - - 2013 - - - - - - - - - - - - 2014 - - - - - - - - - - - - 2015 - - - - - - - - - - - - 2016 - - - - - - - - - - - - 2017 - - - - - - - - - - - - 2018 - - - - - - - - - - - - 2019 - - - - - - - - - - - - 2020 - - - - - - - - - - - - 2021 - - - - - - - - - - - - 2022 - - - - - - - - - - - - 2023 - - - - - - - - - - - - 2024 - - - - - - - - - - - -