Clean_Air 18Z wind_direction 1986 - 35.9 55.7 44.5 80.0 85.4 62.0 47.9 - - 40.9 46.4 1987 48.1 49.6 50.5 74.0 69.5 69.7 - - - - 70.0 76.9 1988 19.8 70.5 54.8 72.7 84.9 74.7 68.1 36.1 53.2 74.5 69.6 65.5 1989 43.9 67.6 74.1 98.0 76.2 79.3 61.9 35.7 55.6 72.8 50.9 40.2 1990 40.8 66.3 75.3 77.1 86.9 50.7 67.2 65.9 - - - 28.9 1991 38.8 55.4 70.3 88.4 79.9 82.0 74.9 72.7 45.8 65.9 45.3 54.1 1992 47.3 74.5 99.2 53.5 73.8 54.9 91.9 74.5 41.7 54.0 58.7 60.3 1993 43.5 59.1 60.0 71.0 61.2 77.5 44.1 73.4 56.8 - - - 1994 - 62.2 38.2 65.7 41.7 53.5 71.7 45.1 53.3 43.7 21.9 68.5 1995 74.4 34.0 58.6 59.5 72.6 63.4 59.7 76.2 83.6 34.5 29.9 22.8 1996 50.4 31.7 73.7 53.9 65.0 44.1 52.0 46.4 63.0 44.1 45.4 27.3 1997 66.4 66.8 72.0 35.8 46.6 67.8 69.4 35.4 58.3 73.4 36.9 73.0 1998 8.1 55.7 52.7 57.6 71.1 58.2 51.0 68.5 61.3 67.6 18.0 24.1 1999 25.3 47.3 57.4 56.6 38.7 75.4 81.1 54.8 75.1 39.4 39.7 39.0 2000 26.4 19.5 60.4 52.0 50.3 48.9 33.0 38.1 39.8 358.7 2.2 12.2 2001 23.6 28.2 36.8 45.7 42.2 34.9 48.1 45.2 28.2 30.2 16.9 14.8 2002 18.3 33.0 38.2 24.3 48.1 57.6 12.0 22.7 61.7 52.8 28.9 24.5 2003 38.9 59.2 62.5 50.7 47.4 72.7 64.7 30.7 56.0 40.9 45.4 26.6 2004 33.0 41.6 51.1 36.1 29.0 67.3 - 41.9 - - 31.8 23.7 2005 - - - - - - - - - - - - 2006 - - - - - - - - - - - - 2007 - - - - - - - - - - - - 2008 - - - - - - - - - - - - 2009 - - - - - - - - - - - - 2010 - - - - - - - - - - - - 2011 - - - - - - - - - - - - 2012 - - - - - - - - - - - - 2013 - - - - - - - - - - - - 2014 - - - - - - - - - - - - 2015 - - - - - - - - - - - - 2016 - - - - - - - - - - - - 2017 - - - - - - - - - - - - 2018 - - - - - - - - - - - - 2019 - - - - - - - - - - - - 2020 - - - - - - - - - - - - 2021 - - - - - - - - - - - - 2022 - - - - - - - - - - - - 2023 - - - - - - - - - - - - 2024 - - - - - - - - - - - -