Detailed overview of ambient air pollution valuis from individual stations

Year: 2002
Pollutant:NOx-nitrogen oxides(oxides of nitrogen)
Station:1012 - Usti n.L.-mesto
Code:CZULCMUNM
Institution:Czech Hydrometeorological Institute
Region:Ustecky
District:Usti nad Labem
IHd: 100
Measure method:chemiluminescence
Unit:ug/m^3

Average daily concentrations

Day/
Month

12345678910111213141516171819202122232425262728293031XMaxN
1 21 17 40 136 177 155 151 91 126 109 101 97 56 71 51 61 67 86 130 37 81 75 111 47 71 27 33 47 43 120 93 81.59 177.01 31.00
2 122 120 94 116 137 62 54 44 31 24 43 25 37 38 92 62 74 66 33 40 33 65 24 24 84 54 40 57 ~ ~ ~ 60.59 137.23 28.00
3 59 41 26 71 99 97 19 58 85 48 116 122 95 19 47 41 40 90 49 44 40 21 13 10 28 21 45 63 78 58 39 54.25 121.57 31.00
4 40 ~ 41 42 28 15 30 44 43 33 31 36 34 30 61 53 71 62 43 21 31 59 38 36 57 33 25 39 53 50 ~ 40.61 70.79 29.00
5 23 25 26 24 38 39 26 17 23 30 35 28 37 42 40 44 30 20 24 29 30 27 24 33 19 25 33 33 20 24 29 29.07 43.68 31.00
6 20 22 32 34 17 26 29 22 23 30 35 40 26 30 38 26 38 45 29 29 21 23 16 32 38 40 27 17 17 32 ~ 28.45 45.04 30.00
7 34 36 32 29 23 15 26 37 40 24 34 27 20 12 23 28 40 24 25 18 26 29 46 33 41 57 33 33 38 33 32 30.55 57.25 31.00
8 38 27 31 23 33 41 25 34 34 23 23 30 15 54 25 21 24 18 40 36 42 28 39 34 27 38 29 39 31 49 24 31.54 54.16 31.00
9 20 31 37 45 47 44 36 41 50 34 31 32 44 21 32 46 59 49 51 49 33 29 20 18 45 64 25 32 45 69 ~ 39.36 68.83 30.00
10 73 86 110 67 27 20 35 33 40 41 29 20 28 102 105 98 38 57 48 50 83 133 72 75 61 19 24 24 55 78 60 57.76 132.75 31.00
11 95 65 29 42 29 59 77 90 38 59 103 127 132 87 135 156 70 131 39 58 66 101 97 51 141 156 95 58 70 61 ~ 83.91 156.43 30.00
12 50 63 70 71 41 30 27 28 76 138 185 82 56 56 41 94 116 72 93 103 143 76 56 33 29 29 51 52 162 83 32 72.12 185.04 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. 17 38 19 13 3 0 0 0 90 73 35 16 3 0 0 0 177
REL. 18.8 42.2 21.1 14.4 3.3 0.0 0.0 0.0 100.0 81.1 38.9 17.8 3.3 0.0 0.0 0.05.1
ID 18 42 21 28 16 0 0 0 127
ABS. 54 35 1 0 0 0 0 0 90 36 1 0 0 0 0 0 71
REL. 60.0 38.8 1.1 0.0 0.0 0.0 0.0 0.0 100.0 40.0 1.1 0.0 0.0 0.0 0.0 0.0 17.4
ID 60 38 1 0 0 0 0 0 100
ABS. 51 40 1 0 0 0 0 0 92 41 1 0 0 0 0 0 69
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 30.9
ID 55 43 1 0 0 0 0 0 100
ABS. 17 31 25 15 4 0 0 0 92 75 44 19 4 0 0 0 185
REL 18.4 33.6 27.1 16.3 4.3 0.0 0.0 0.0100.0 81.5 47.8 20.7 4.3 0.0 0.0 0.011.12
ID 18 33 27 32 21 0 0 0 133
Year
ABS. 139 144 46 28 7 0 0 0 364 225 81 35 7 0 0 0 185
REL. 38.1 39.5 12.6 7.6 1.9 0.0 0.0 0.0100.0 61.8 22.3 9.6 1.9 0.0 0.0 0.011.12
ID 38 39 12 15 9 0 0 0 115

Note:

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