Detailed overview of ambient air pollution valuis from individual stations

Year: 2001
Pollutant:NOx-nitrogen oxides(oxides of nitrogen)
Station:1129 - Brno-Kroftova
Code:CZBMCMKRO
Institution:Czech Hydrometeorological Institute
Region:Jihomoravsky
District:Brno-mesto
IHd: 100
Measure method:chemiluminescence
Unit:ug/m^3

Average daily concentrations

Day/
Month

12345678910111213141516171819202122232425262728293031XMaxN
1 45 57 93 88 52 79 42 43 71 89 57 50 44 73 125 100 54 51 45 32 35 38 37 36 38 98 80 83 52 41 29 59.80 125.22 31.00
2 39 54 47 129 164 203 145 155 127 43 98 142 53 55 118 128 43 26 35 25 24 23 44 34 46 53 77 27 ~ ~ ~ 77.10 202.83 28.00
3 81 75 60 108 36 119 36 50 67 65 123 59 59 94 63 87 51 70 27 35 48 76 68 61 62 42 33 30 28 58 ~ 62.35 123.42 30.00
4 ~ 92 88 32 39 76 35 32 36 41 59 28 17 28 29 40 31 58 45 37 30 21 37 41 33 34 47 35 25 19 ~ 40.14 92.05 29.00
5 31 26 51 41 15 18 22 27 32 32 26 19 35 25 32 54 31 27 26 31 33 31 36 43 31 26 30 29 29 27 27 30.39 53.81 31.00
6 25 30 18 18 35 25 36 39 28 39 31 48 42 41 52 30 23 18 16 22 28 21 12 20 23 30 34 28 26 22 ~ 28.62 52.31 30.00
7 22 16 22 32 19 12 9 14 13 27 21 40 23 28 16 16 15 20 34 22 13 16 25 18 22 27 33 21 25 23 39 22.02 40.33 31.00
8 21 32 16 16 26 33 43 30 38 33 18 28 40 43 35 40 48 27 44 31 30 29 25 39 32 33 30 27 27 42 45 32.30 48.33 31.00
9 19 27 64 41 22 25 39 38 36 42 39 58 96 50 49 38 33 73 37 78 72 42 35 89 46 70 90 43 56 34 ~ 49.32 96.41 30.00
10 63 53 56 38 58 61 41 62 70 56 61 72 69 66 82 72 54 43 53 24 51 86 49 83 56 50 44 60 132 153 113 65.53 153.13 31.00
11 26 47 88 81 63 90 76 46 46 60 44 61 42 40 129 155 94 55 72 56 110 57 20 28 27 103 57 110 155 58 ~ 69.87 155.26 30.00
12 38 57 61 44 89 72 78 39 116 200 119 76 61 85 99 42 161 43 50 43 85 95 50 71 46 116 102 67 46 42 39 75.23 200.00 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. 11 46 18 11 2 1 0 0 89 78 32 14 3 1 0 0 203
REL. 12.3 51.6 20.2 12.3 2.2 1.1 0.0 0.0 100.0 87.6 36.0 15.7 3.4 1.1 0.0 0.06.2
ID 12 51 20 24 11 28 0 0 148
ABS. 58 29 3 0 0 0 0 0 90 32 3 0 0 0 0 0 92
REL. 64.4 32.2 3.3 0.0 0.0 0.0 0.0 0.0 100.0 35.6 3.3 0.0 0.0 0.0 0.0 0.0 2.4
ID 64 32 3 0 0 0 0 0 100
ABS. 51 34 7 0 0 0 0 0 92 41 7 0 0 0 0 0 96
REL. 55.4 36.9 7.6 0.0 0.0 0.0 0.0 0.0100.0 44.6 7.6 0.0 0.0 0.0 0.0 0.0 13.9
ID 55 36 7 0 0 0 0 0 100
ABS. 5 49 23 10 5 0 0 0 92 87 38 15 5 0 0 0 200
REL 5.4 53.2 25.0 10.8 5.4 0.0 0.0 0.0100.0 94.6 41.3 16.3 5.4 0.0 0.0 0.010.12
ID 5 53 25 21 27 0 0 0 132
Year
ABS. 125 158 51 21 7 1 0 0 363 238 80 29 8 1 0 0 203
REL. 34.4 43.5 14.0 5.7 1.9 0.2 0.0 0.0100.0 65.6 22.0 8.0 2.2 0.3 0.0 0.0 6.2
ID 34 43 14 11 9 6 0 0 120

Note:

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