Tab. III.1 Change in the percentage of dispersion conditions in the year 2015 in comparison with the average for the period 2007–2014 in the CR and agglomerations


Dispersion conditions
 [%]
Year Month
1 2 3 4 5 6 7 8 9 10 11 12
Czech Republic
Good 13.9 12.6 7.7 1.9 16.3 8.9 16.7 16.5 26.6 36.3 13.1 14.6 -4.4
Moderately poor -10.2 -6.2 -0.7 0.5 -16.3 -8.5 -16.7 -16.1 -26.2 -33.3 -3.0 -7.1 10.9
Poor -3.7 -6.5 -7.1 -2.4 0.0 -0.4 0.0 -0.4 -0.4 -2.9 -10.1 -7.5 -6.5
Agglomeration of Prague
Good 15.6 10.3 -6.6 -1.3 22.1 13.7 19.6 18.1 29.4 37.9 4.6 31.7 6.9
Moderately poor -7.9 -0.5 19.4 9.4 -20.0 -12.9 -18.8 -15.3 -28.2 -29.6 16.8 -20.8 6.5
Poor -7.7 -9.8 -12.8 -8.2 -2.1 -0.8 -0.8 -2.8 -1.2 -8.3 -21.5 -10.8 -13.3
Agglomeration of Brno
Good 14.2 15.9 -4.8 10.0 18.8 11.3 18.8 19.4 20.6 34.6 20.8 24.6 -19.8
Moderately poor -11.3 -5.4 5.6 -3.8 -18.3 -11.3 -18.8 -18.1 -19.0 -27.5 -6.2 -18.8 6.5
Poor -2.9 -10.6 -0.8 -6.1 -0.4 0.0 0.0 -1.2 -1.6 -7.1 -14.6 -5.8 13.3
Agglomeration of Ostrava/Karviná/Frýdek-Místek
Good 14.3 14.7 -5.2 15.2 22.9 24.2 8.8 22.6 17.7 29.6 -5.9 16.3 9.3
Moderately poor -8.8 -9.8 11.3 -13.1 -20.8 -23.4 -8.3 -20.6 -14.9 -24.6 18.9 -4.2 5.2
Poor -5.5 -4.9 -6.2 -2.1 -2.1 -0.8 -0.4 -2.0 -2.8 -5.0 -13.0 -12.1 -14.5
Note: The changes of the share by more than ± 5 % are highlighted. The data are based on daily averages of the ventilation index calculated by the NWP model ALADIN.