Detailed overview of ambient air pollution valuis from individual stations

Year: 1998
Pollutant:NOx-nitrogen oxides(oxides of nitrogen)
Station:1129 - Brno-Kroftova
Code:CZBMCMKRO
Institution:CHMI
Region:Jihomoravsky
District:Brno-mesto
IHd: 100
Measure method:chemiluminescence
Unit:ug/m^3

Average daily concentrations

Day/
Month

12345678910111213141516171819202122232425262728293031XMaxN
1 50 74 47 44 58 52 237 135 27 72 54 50 46 66 218 118 78 50 59 49 25 47 55 54 50 138 154 103 92 156 36 80.38 237.35 31.00
2 57 68 85 192 123 222 124 68 175 189 236 117 35 51 65 90 38 91 101 166 102 65 53 74 69 92 76 30 ~ ~ ~ 102.01 235.96 28.00
3 69 53 60 60 20 35 39 38 29 45 38 73 33 21 31 51 108 74 30 28 22 39 51 31 36 59 86 50 79 70 68 49.25 107.81 31.00
4 66 71 87 26 46 48 55 36 61 22 51 19 33 75 29 61 62 29 27 41 35 46 69 29 42 23 19 26 40 23 ~ 43.35 87.04 30.00
5 16 39 36 22 32 47 61 39 29 33 52 43 31 27 23 21 24 35 29 25 31 20 26 47 50 51 65 20 30 25 34 34.25 65.38 31.00
6 30 40 43 34 36 14 13 19 30 20 35 26 12 23 38 35 27 26 21 25 36 28 29 33 38 46 33 23 38 33 ~ 29.49 45.66 30.00
7 29 23 29 14 17 23 24 22 23 33 16 28 27 36 31 28 33 22 29 53 21 23 28 29 30 29 21 31 36 41 40 28.00 52.81 31.00
8 23 22 26 22 24 36 41 37 19 29 46 36 29 29 31 44 44 45 33 57 32 19 41 37 31 48 34 25 21 36 57 34.12 56.94 31.00
9 47 38 31 55 21 52 28 28 28 19 28 20 39 44 34 60 64 36 26 24 27 38 58 81 42 57 60 45 56 47 ~ 41.07 80.97 30.00
10 43 51 45 37 68 79 52 39 51 46 46 36 50 79 140 82 75 56 74 71 84 164 138 74 74 111 74 40 35 25 37 66.97 163.64 31.00
11 19 114 76 145 86 67 65 100 98 85 62 128 65 42 60 77 43 71 107 38 41 115 258 394 165 157 126 76 87 71 ~ 101.22 393.78 30.00
12 61 139 64 70 77 32 37 43 65 104 89 62 57 92 224 69 191 151 65 128 87 133 84 28 29 30 38 58 133 58 30 81.58 223.79 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. 12 38 20 10 6 4 0 0 90 78 40 20 10 4 0 0 237
REL. 13.3 42.2 22.2 11.1 6.6 4.4 0.0 0.0 100.0 86.7 44.4 22.2 11.1 4.4 0.0 0.07.1
ID 13 42 22 22 33 111 0 0 244
ABS. 49 38 4 0 0 0 0 0 91 42 4 0 0 0 0 0 87
REL. 53.8 41.7 4.3 0.0 0.0 0.0 0.0 0.0 100.0 46.2 4.4 0.0 0.0 0.0 0.0 0.0 3.4
ID 53 41 4 0 0 0 0 0 100
ABS. 51 40 1 0 0 0 0 0 92 41 1 0 0 0 0 0 81
REL. 55.4 43.4 1.0 0.0 0.0 0.0 0.0 0.0100.0 44.6 1.1 0.0 0.0 0.0 0.0 0.0 24.9
ID 55 43 1 0 0 0 0 0 100
ABS. 7 34 29 14 5 2 1 0 92 85 51 22 8 3 1 0 394
REL 7.6 36.9 31.5 15.2 5.4 2.1 1.0 0.0100.0 92.4 55.4 23.9 8.7 3.3 1.1 0.024.11
ID 7 36 31 30 27 54 135 0 323
Year
ABS. 119 150 54 24 11 6 1 0 365 246 96 42 18 7 1 0 394
REL. 32.6 41.0 14.7 6.5 3.0 1.6 0.2 0.0100.0 67.4 26.3 11.5 4.9 1.9 0.3 0.024.11
ID 32 41 14 13 15 41 34 0 192

Note:

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