Detailed overview of ambient air pollution valuis from individual stations

Year: 2001
Pollutant:NOx-nitrogen oxides(oxides of nitrogen)
Station: 147 - Brno-VSZ
Code:CZBMCMVSZ
Institution:Czech Hydrometeorological Institute
Region:Jihomoravsky
District:Brno-mesto
IHd: 100
Measure method:guajacol (modif. Jakobs-Hochheiser) - spectrophotometry
Unit:ug/m^3

Average daily concentrations

Day/
Month

12345678910111213141516171819202122232425262728293031XMaxN
1 29 39 41 39 33 34 26 28 33 33 30 29 27 50 55 56 40 43 41 26 34 29 27 ~ 28 36 31 40 28 ~ 22 34.72 56.00 29.00
2 23 26 29 50 56 61 42 55 41 23 40 53 64 62 45 43 17 21 20 19 25 24 25 28 17 43 43 30 ~ ~ ~ 36.61 64.00 28.00
3 30 44 44 32 52 22 43 31 30 32 38 45 39 33 42 49 51 25 29 22 24 39 57 42 38 34 21 26 27 34 40 35.97 57.00 31.00
4 32 48 57 101 66 55 96 53 40 38 ~ 34 37 19 13 23 28 17 16 ~ 45 29 19 14 75 26 51 70 46 37 ~ 42.32 101.00 28.00
5 43 15 11 23 17 16 13 17 ~ 24 56 44 22 36 58 67 57 60 29 34 45 52 39 60 60 60 47 20 41 14 31 37.03 67.00 30.00
6 2.00 53 36 63 34 21 25 22 30 33 32 33 24 28 29 33 21 22 16 6.00 5.00 2.00 2.00 2.00 44 21 44 37 29 40 ~ 26.30 63.00 30.00
7 38 52 2.00 37 2.00 40 32 2.00 50 34 30 25 24 19 23 24 42 57 40 41 35 39 34 15 2.00 8.00 7.00 9.00 5.00 6.00 33 26.03 57.00 31.00
8 32 39 34 31 34 35 18 19 20 14 11 7.00 21 27 21 34 27 18 25 25 22 27 14 24 26 16 25 22 21 30 46 24.68 46.00 31.00
9 20 12 41 11 17 5.00 11 7.00 6.00 10 22 23 40 32 25 22 27 37 27 36 40 22 21 6.00 27 26 35 28 26 28 ~ 23.00 41.00 30.00
10 41 35 35 22 38 27 29 35 45 40 50 33 41 36 41 37 35 39 40 20 49 29 32 53 58 23 36 35 47 41 39 37.45 58.00 31.00
11 63 29 2.00 31 32 46 31 31 25 28 36 36 30 28 40 47 34 26 39 32 41 30 16 18 16 68 34 79 22 26 ~ 33.87 79.00 30.00
12 20 36 40 33 36 38 24 11 70 89 48 25 35 49 55 25 56 38 28 39 55 39 36 39 37 53 42 38 24 31 29 39.29 89.00 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. 44 44 0 0 0 0 0 0 88 44 0 0 0 0 0 0 64
REL. 50.0 50.0 0.0 0.0 0.0 0.0 0.0 0.0 100.0 50.0 0.0 0.0 0.0 0.0 0.0 0.013.2
ID 50 50 0 0 0 0 0 0 100
ABS. 46 37 4 1 0 0 0 0 88 42 5 1 0 0 0 0 101
REL. 52.2 42.0 4.5 1.1 0.0 0.0 0.0 0.0 100.0 47.7 5.7 1.1 0.0 0.0 0.0 0.0 4.4
ID 52 42 4 2 0 0 0 0 101
ABS. 67 25 0 0 0 0 0 0 92 25 0 0 0 0 0 0 57
REL. 72.8 27.1 0.0 0.0 0.0 0.0 0.0 0.0100.0 27.2 0.0 0.0 0.0 0.0 0.0 0.0 18.7
ID 72 27 0 0 0 0 0 0 100
ABS. 36 52 4 0 0 0 0 0 92 56 4 0 0 0 0 0 89
REL 39.1 56.5 4.3 0.0 0.0 0.0 0.0 0.0100.0 60.9 4.3 0.0 0.0 0.0 0.0 0.010.12
ID 39 56 4 0 0 0 0 0 100
Year
ABS. 193 158 8 1 0 0 0 0 360 167 9 1 0 0 0 0 101
REL. 53.6 43.8 2.2 0.2 0.0 0.0 0.0 0.0100.0 46.4 2.5 0.3 0.0 0.0 0.0 0.0 4.4
ID 53 43 2 0 0 0 0 100

Note:

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