Detailed overview of ambient air pollution valuis from individual stations

Year: 2001
Pollutant:NO2-nitrogen dioxide
Station:1140 - Beroun
Code:CZBECMBER
Institution:Czech Hydrometeorological Institute
Region:Stredocesky
District:Beroun
IHd: 100
Measure method:chemiluminescence
Unit:ug/m^3

Average daily concentrations

Day/
Month

12345678910111213141516171819202122232425262728293031XMaxN
1 46 46 58 63 51 28 35 45 44 50 55 61 60 67 79 112 42 54 46 42 37 45 44 41 53 49 29 40 64 50 34 50.63 112.43 31.00
2 40 42 46 46 36 51 59 44 34 32 41 66 25 36 54 65 29 23 21 17 16 8.65 22 35 44 41 47 49 ~ ~ ~ 38.23 66.30 28.00
3 52 56 44 36 30 50 58 53 53 29 26 29 31 20 37 44 36 35 12 22 49 48 50 40 31 19 39 38 34 40 37 37.97 58.28 31.00
4 41 54 39 29 28 40 25 26 34 39 29 13 11 13 19 23 40 32 38 21 13 25 39 39 31 27 33 26 29 44 ~ 30.07 53.96 30.00
5 32 34 42 29 13 9 16 22 41 41 22 19 30 34 31 28 23 16 ~ 30 31 36 40 45 30 28 20 19 14 22 21 27.34 44.64 30.00
6 13 16 5.13 10 26 33 31 24 23 20 29 26 41 37 40 14 21 17 17 29 25 16 9 22 30 44 51 32 28 21 ~ 24.96 51.46 30.00
7 18 22 35 33 24 26 13 17 20 31 26 33 23 20 13 20 20 28 26 24 13 23 28 33 28 27 40 30 25 29 35 25.30 40.29 31.00
8 25 42 27 19 19 28 24 33 27 26 16 29 33 45 41 40 30 27 26 ~ 28 30 34 37 35 38 29 24 23 42 42 30.59 44.61 30.00
9 16 21 35 31 32 24 16 10 7.38 16 17 24 36 33 22 24 21 31 36 36 32 24 29 32 26 28 36 19 25 30 ~ 25.71 36.44 30.00
10 37 35 35 23 33 31 24 39 36 33 29 36 30 35 33 36 47 39 40 29 35 26 42 32 36 35 28 30 22 32 21 32.90 46.69 31.00
11 14 24 27 31 33 31 30 22 29 38 40 44 37 46 49 46 38 35 43 37 45 25 18 27 42 49 44 41 39 34 ~ 35.31 49.49 30.00
12 21 19 32 37 48 31 28 34 42 58 49 20 37 42 45 18 33 32 39 35 25 33 20 15 14 22 21 15 35 15 16 29.98 57.86 31.00

Quarterly and annual absolute and relative frequency of average daily concentrations
partial and total air pollution indexes according to classes of IHd multiples

Quarter

concentration classes in IHd multiples

total ind.

part of it in IHd multiples

max.
date

<=1/3 <=2/3 <=1.0 <=1.5 <=2.0 <=3.0 <=4.0 > 1/32/31.01.52.0 3.04.0

concentration classes in measurement units

part of above IHd multiples in meas. units

0- 33 34- 67 68- 100 101- 150 151- 200 201- 300 301- 400 over 400 33 67 100 150 200 300 400
ABS. 21 67 1 1 0 0 0 0 90 69 2 1 0 0 0 0 112
REL. 23.3 74.4 1.1 1.1 0.0 0.0 0.0 0.0 100.0 76.7 2.2 1.1 0.0 0.0 0.0 0.016.1
ID 23 74 1 2 0 0 0 0 101
ABS. 66 24 0 0 0 0 0 0 90 24 0 0 0 0 0 0 54
REL. 73.3 26.6 0.0 0.0 0.0 0.0 0.0 0.0 100.0 26.7 0.0 0.0 0.0 0.0 0.0 0.0 2.4
ID 73 26 0 0 0 0 0 0 100
ABS. 72 19 0 0 0 0 0 0 91 19 0 0 0 0 0 0 45
REL. 79.1 20.8 0.0 0.0 0.0 0.0 0.0 0.0100.0 20.9 0.0 0.0 0.0 0.0 0.0 0.0 14.8
ID 79 20 0 0 0 0 0 0 100
ABS. 47 45 0 0 0 0 0 0 92 45 0 0 0 0 0 0 58
REL 51.0 48.9 0.0 0.0 0.0 0.0 0.0 0.0100.0 48.9 0.0 0.0 0.0 0.0 0.0 0.010.12
ID 51 48 0 0 0 0 0 0 100
Year
ABS. 206 155 1 1 0 0 0 0 363 157 2 1 0 0 0 0 112
REL. 56.7 42.6 0.2 0.2 0.0 0.0 0.0 0.0100.0 43.3 0.6 0.3 0.0 0.0 0.0 0.0 16.1
ID 56 42 0 0 0 0 100

Note:

1 frequency < 60 per quarter, or < 240 per annum
2 frequency < 30 per quarter, or < 120 per annum