English Abstract This report presents tabulated monitoring results from
the National Air Quality Monitoring Network for the Regions 6 (Utrecht &
Flevoland), 7 (Gelderland), 8 (Overijssel) and 9 (Noord Nederland) for the
calendar year 1992, the summer of 1992, the winter of 1991-1992 and the
period 1 April 1991-31 March 1992 (tropical year: EC reference period) ;
SO2, black smoke (= suspended matter measured by the black smoke method),
fine dust (PM10), NO2, NO, NOx (=NO2+NO), O3, Ox (=NO2+O3) and CO are the
components concerned. This year for the first time results of measurements
of PM10 are presented. Since the monitoring of this component at most
stations started in the first months of 1992, no statistics are calculated
for the periods 'winter' and year April/March'. Furthermore, for every
station in the network it was checked whether Dutch limit values were
exceeded. Nationally exceedances of the limit values for black smoke, PM10
and NO2 were observed. The draft limit value for O3 was not
exceeded.