Spreadsheet: 153174d3-6676-40b2-92f0-9f78e772459f
Sheet: Figure 4.3 (top)

Figure 4.3 Trend in NO2 (top) and NOx (middle) annual mean concentrations (2001–2010) at rural (R), urban (U) and traffic (T) stations. Bottom: percentage frequency distribution of estimated annual change of NO2 annual mean concentrations at urban stations (left) and at traffic stations (right)
Note: All stations in EU Member States, with at least 75 % data coverage for at least 8 years were included in the analysis. Concentrations per station type (T= traffic, U=Urban/Suburban, R=Rural) are given in µg/m3. In the top diagrams a geographical bias exists towards central Europe where there is a higher density of stations. In the percentage frequency distribution graphs, closed bars denote stations showing a statistically significant trend, open bars denote stations with a non-significant trend. Statistically significant trends (level of significance 0.1) are calculated by applying the Mann-Kendall test. The applied method is described in de Leeuw, 2012.
Source: ETC/ACM
The layout version will use colors consistently in the figures, consistent with the color used in Figure 4.2 in the 2011 Report.
Annual mean/day
all | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010
N | 1189 | 1232 | 1394 | 1420 | 1436 | 1443 | 1423 | 1438 | 1414 | 1337
aver | 27.72907064760303 | 27.32703977272724 | 29.54916355810619 | 27.7347781690141 | 28.02983077994429 | 28.23997505197504 | 26.98298664792692 | 26.08184005563286 | 26.01009971711457 | 25.95249813014213
U | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010
N | 542 | 558 | 622 | 638 | 635 | 647 | 634 | 646 | 638 | 597
aver | 26.58068634686348 | 26.01806989247312 | 28.02697909967847 | 26.06086833855799 | 26.17355118110238 | 26.09838176197837 | 25.1488028391167 | 24.42615015479875 | 24.47939655172414 | 24.55852596314907
T | 2001.1 | 2002.1 | 2003.1 | 2004.1 | 2005.1 | 2006.1 | 2007.1 | 2008.1 | 2009.1 | 2010.1
N | 281 | 288 | 350 | 360 | 364 | 363 | 356 | 362 | 347 | 331
aver | 44.32662633451954 | 44.15330902777777 | 46.16601714285718 | 43.32217222222219 | 44.40028296703294 | 45.10250413223142 | 43.16295505617976 | 41.51284530386739 | 41.90302305475502 | 40.89205135951663
RL | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010
N | 139 | 144 | 156 | 154 | 160 | 157 | 157 | 160 | 157 | 146
aver | 13.44330935251798 | 13.03746527777778 | 14.28039102564103 | 13.29632467532467 | 12.99505625 | 13.50692356687898 | 12.60617834394905 | 12.31365625 | 12.29567515923567 | 12.95340410958904
RH | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010
N | 73 | 75 | 72 | 76 | 76 | 77 | 77 | 75 | 75 | 72
aver | 8.51505479452055 | 8.387373333333334 | 9.47605555555555 | 8.32336842105263 | 8.612828947368426 | 8.518987012987012 | 7.956194805194803 | 7.778693333333331 | 8.020813333333333 | 8.951749999999999
R | 2000.9 | 2001.9 | 2002.9 | 2003.9 | 2004.9 | 2005.9 | 2006.9 | 2007.9 | 2008.9 | 2009.9
N | 212 | 219 | 228 | 230 | 236 | 234 | 234 | 235 | 232 | 218
aver | 11.74631603773584 | 11.44496803652968 | 12.76323245614035 | 11.65308695652173 | 11.58383050847458 | 11.86559401709402 | 11.07605555555554 | 10.86632765957447 | 10.91371551724138 | 11.63175688073395
O | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010
N | 154 | 167 | 194 | 192 | 201 | 199 | 199 | 195 | 197 | 191
aver | 23.48787012987013 | 23.51035329341316 | 24.17850515463918 | 23.335203125 | 23.55793532338308 | 23.69785427135678 | 22.58613065326633 | 21.25721025641024 | 20.75175126903554 | 20.76470157068062