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 11.7 12.3 37.1 8.5 13.0 12.2 4.1 3.2 26.2 10.4 13.8 13.6 -13.3
Moderately poor -7.0 -13.4 -22.1 -1.3 -14.4 -11.5 -3.3 -0.7 -25.1 -9.6 2.0 6.0 9.0
Poor -4.6 1.0 -15.0 -7.2 1.5 -0.7 -0.7 -2.5 -1.1 -0.7 -15.9 -19.5 4.3
Agglomeration of Brno
Good 10.7 7.7 35.0 12.1 -3.3 13.3 3.3 7.5 15.1 4.1 21.7 14.4 -1.4
Moderately poor -6.2 -1.5 -27.2 -6.6 3.7 -13.3 -3.3 -6.5 -13.6 2.2 -5.5 0.8 -3.9
Poor -4.5 -6.1 -7.9 -5.4 -0.4 0.0 0.0 -1.1 -1.4 -6.3 -16.2 -15.2 5.4
Agglomeration of Ostrava/Karviná/Frýdek-Místek
Good 12.1 13.0 27.7 10.3 10.4 8.6 7.8 3.9 22.2 -3.7 14.1 27.7 5.0
Moderately poor -7.8 -8.7 -18.6 -8.4 -8.5 -7.9 -7.4 -2.2 -19.7 4.8 0.6 -13.6 -5.0
Poor -4.3 -4.4 -9.1 -1.8 -1.9 -0.7 -0.4 -1.8 -2.5 -1.1 -14.7 -14.1 0.0
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.