yearN avgpm10
2011
29.802214285714286
2004
26.047409848484848
2012
27.397648553900088
2005
27.282942528735632
2007
26.783158912386707
2009
30.513440239043825
2010
30.71033926852743
2002
26.791621149897331
2003
29.243242769500438
2001
25.826340527577938
2008
29.178777027027027
2000
27.400911439114391
2006
29.317115923566879