Maxima for NOx (episodes)

The stations are sorted according to type of site.
Unit: µg(NO2)/m3

NOx (hour)     2009
Traffic:
Copenhagen/1257
Copenhagen/1103
Århus/6153
Odense/9155
Aalborg/8151
Urban backgr.:
Copenhagen/1259
Århus/6159
Odense/9159
Aalborg/8159
Rural:
Ll. Valby/2090
Keldsnor/9055
Max. 3 hours
Day:hour
Max. hour
Day:hour
494
090403: 6
669
091105:11
589
090918: 4
879
090918: 5
738
091202: 7
812
091202: 8
894
091202: 8
1261
091202: 8
801
091221: 8
855
091221: 9
 
154
091028: 8
222
091028: 9
318
091214:19
331
091214:20
415
091202: 7
736
091202: 8
547
090105: 8
736
090105: 8
 
99
090403: 7
133
090403: 7
78
090109: 3
94
090630:16


Unit: µg(NO2)/m3

NO2 (hour)     2009
Traffic:
Copenhagen/1257
Copenhagen/1103
Århus/6153
Odense/9155
Aalborg/8151
Urban backgr.:
Copenhagen/1259
Århus/6159
Odense/9159
Aalborg/8159
Rural:
Ll. Valby/2090
Keldsnor/9055
Max. 3 hours
Day:hour
Max. hour
Day:hour
185
090424: 5
208
090216: 8
176
090403:23
226
090404: 0
115
091214:17
162
091208: 7
138
091202: 8
179
091202: 8
163
091221: 8
181
091221: 9
 
80
090404: 0
100
090404: 0
84
091214:17
93
090501: 4
86
091202: 8
122
091202: 8
135
090105: 8
162
090105: 8
 
58
090404: 4
74
090404: 4
59
090109: 1
80
090714:23
Alert threshold
 400   
   -   
   -   
   -   

The Alert threshold is given in EU Council Directive 1999/30/EC of 22 April 1999 (Official Journal of the European Communities - L163/41).
With reference to the definition of the alert threshold, the lowest one hour values are calculated for all consecutive three hour periods.
The highest of these one hour values are listed in the table in the column Max. 3 hour.

Overview of NOx

Updated 090313 K. Kemp