Detailed overview of ambient air pollution valuis from individual stations

Year: 2001
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 40 39 75 80 91 148 75 118 108 105 89 70 47 72 104 93 43 62 62 44 29 44 46 55 79 113 39 64 66 58 41 70.87 147.51 31.00
2 43 42 47 82 228 177 137 89 69 42 88 158 64 60 138 152 31 31 53 18 23 23 29 29 68 113 61 56 ~ ~ ~ 76.77 228.34 28.00
3 106 78 59 65 35 59 54 41 73 39 69 58 35 43 71 95 36 50 26 27 46 63 62 45 26 23 28 35 38 81 54 52.30 105.82 31.00
4 63 73 72 56 40 78 32 27 40 56 44 18 18 26 35 35 35 37 37 25 11 21 54 67 44 36 45 36 51 47 ~ 41.95 77.60 30.00
5 33 37 30 31 14 14 23 22 34 40 26 16 37 33 49 30 38 32 23 26 27 29 40 44 25 33 23 39 23 29 30 29.96 49.16 31.00
6 33 20 15 23 35 71 46 34 23 18 34 38 46 48 42 32 37 ~ 15 30 39 24 14 26 35 36 40 51 27 19 ~ 32.82 71.14 29.00
7 12 27 27 25 19 18 13 24 37 42 46 33 31 33 12 21 24 38 31 32 ~ ~ 33 47 35 30 32 26 23 38 33 29.06 46.98 29.00
8 23 43 42 26 30 41 43 46 40 35 23 33 71 51 35 36 25 20 44 27 24 28 34 43 34 40 31 19 29 46 77 36.72 77.49 31.00
9 39 33 52 48 36 45 42 16 15 29 32 48 55 46 52 38 50 51 39 31 47 42 45 59 43 40 88 37 51 55 ~ 43.48 87.53 30.00
10 44 71 67 58 68 57 45 78 75 92 81 90 85 91 97 101 83 73 83 52 62 111 63 66 115 44 33 65 64 93 90 74.13 114.99 31.00
11 22 42 63 54 61 82 51 56 32 59 73 101 60 103 130 126 76 56 68 127 126 41 23 41 73 91 78 131 107 44 ~ 73.19 130.74 30.00
12 31 36 54 72 112 67 32 24 77 134 73 26 36 78 60 20 50 61 51 37 47 50 60 44 48 46 48 61 42 22 31 52.63 134.10 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. 13 43 20 10 3 1 0 0 90 77 34 14 4 1 0 0 228
REL. 14.4 47.7 22.2 11.1 3.3 1.1 0.0 0.0 100.0 85.6 37.8 15.6 4.4 1.1 0.0 0.05.2
ID 14 47 22 22 16 27 0 0 151
ABS. 44 41 5 0 0 0 0 0 90 46 5 0 0 0 0 0 78
REL. 48.8 45.5 5.5 0.0 0.0 0.0 0.0 0.0 100.0 51.1 5.6 0.0 0.0 0.0 0.0 0.0 6.4
ID 48 45 5 0 0 0 0 0 100
ABS. 41 46 3 0 0 0 0 0 90 49 3 0 0 0 0 0 88
REL. 45.5 51.1 3.3 0.0 0.0 0.0 0.0 0.0100.0 54.4 3.3 0.0 0.0 0.0 0.0 0.0 27.9
ID 45 51 3 0 0 0 0 0 100
ABS. 11 40 28 13 0 0 0 0 92 81 41 13 0 0 0 0 134
REL 11.9 43.4 30.4 14.1 0.0 0.0 0.0 0.0100.0 88.0 44.6 14.1 0.0 0.0 0.0 0.010.12
ID 11 43 30 28 0 0 0 0 114
Year
ABS. 109 170 56 23 3 1 0 0 362 253 83 27 4 1 0 0 228
REL. 30.1 46.9 15.4 6.3 0.8 0.2 0.0 0.0100.0 69.9 22.9 7.5 1.1 0.3 0.0 0.0 5.2
ID 30 46 15 12 4 6 0 0 116

Note:

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