Clean_Air 12Z wind_direction 1986 - 41.1 50.3 38.5 79.2 81.5 67.5 45.1 - 60.2 36.0 47.2 1987 47.2 48.8 49.3 68.8 67.4 59.1 - - - 70.5 77.9 58.6 1988 22.8 70.1 47.4 71.8 83.6 72.4 70.3 47.0 45.1 76.1 50.5 60.4 1989 49.0 59.9 69.4 92.9 71.8 77.2 54.9 38.9 59.9 75.3 48.5 39.1 1990 40.2 65.0 81.8 83.5 91.1 48.2 63.1 63.0 - - - 26.7 1991 37.9 56.1 68.6 89.6 77.2 77.9 70.7 77.0 42.7 68.0 42.3 60.9 1992 55.9 68.7 98.1 55.7 78.1 60.6 92.0 71.1 39.5 61.1 54.1 55.3 1993 50.6 54.0 61.8 75.3 67.4 77.6 43.1 68.3 57.6 - - - 1994 - 63.0 34.5 66.8 39.6 60.7 80.5 42.4 58.4 44.3 26.9 66.3 1995 62.9 45.7 59.9 53.4 70.4 60.8 58.9 67.8 84.0 33.6 30.2 29.2 1996 46.8 33.2 73.3 53.4 62.7 48.0 50.6 53.7 60.7 47.4 49.3 33.2 1997 53.2 76.3 73.5 37.1 44.1 65.5 69.3 38.8 58.3 66.9 34.8 73.0 1998 3.9 50.3 48.2 57.1 70.3 53.2 52.7 63.7 57.5 57.0 24.0 21.2 1999 27.7 44.3 55.8 57.2 40.1 69.9 79.9 65.0 81.3 45.2 35.4 32.2 2000 26.1 22.2 56.6 51.9 56.1 46.1 32.6 40.7 47.0 6.5 357.1 14.7 2001 32.4 37.6 35.7 46.0 33.4 31.8 47.4 48.4 25.9 28.7 18.1 7.4 2002 17.4 31.5 32.1 23.0 47.8 54.7 13.5 26.4 59.0 45.4 20.7 33.4 2003 36.2 57.4 66.0 47.6 46.1 76.0 65.1 28.7 57.2 36.5 50.2 32.7 2004 25.4 41.8 54.7 37.8 29.7 68.1 - - - - 26.4 23.3 2005 - - - - - - - - - - - - 2006 - - - - - - - - - - - - 2007 - - - - - - - - - - - - 2008 - - - - - - - - - - - - 2009 - - - - - - - - - - - - 2010 - - - - - - - - - - - - 2011 - - - - - - - - - - - - 2012 - - - - - - - - - - - - 2013 - - - - - - - - - - - - 2014 - - - - - - - - - - - - 2015 - - - - - - - - - - - - 2016 - - - - - - - - - - - - 2017 - - - - - - - - - - - - 2018 - - - - - - - - - - - - 2019 - - - - - - - - - - - - 2020 - - - - - - - - - - - - 2021 - - - - - - - - - - - - 2022 - - - - - - - - - - - - 2023 - - - - - - - - - - - - 2024 - - - - - - - - - - - -