Detailed overview of ambient air pollution valuis from individual stations

Year: 2000
Pollutant:NOx-nitrogen oxides(oxides of nitrogen)
Station:1012 - Usti n.L.-mesto
Code:CZULCMUNM
Institution:Czech Hydrometeorological Institute
Region:Severocesky
District:Usti nad Labem
IHd: 100
Measure method:chemiluminescence
Unit:ug/m^3

Average daily concentrations

Day/
Month

12345678910111213141516171819202122232425262728293031XMaxN
1 51 79 99 163 89 90 75 66 48 93 77 77 33 48 47 53 31 29 32 37 22 43 24 ~ ~ 163 59 74 25 29 36 61.75 162.90 29.00
2 79 95 33 54 71 94 86 35 28 39 77 48 25 69 132 61 55 48 68 19 48 101 115 93 59 62 45 61 39 ~ ~ 63.41 132.49 29.00
3 34 41 26 16 21 46 37 36 19 ~ 28 27 56 65 24 35 29 33 23 46 45 88 84 120 70 33 27 34 38 38 43 42.07 119.71 30.00
4 50 57 70 67 31 20 20 24 32 51 49 54 29 42 34 47 40 47 45 44 55 37 21 15 30 50 32 21 24 28 ~ 38.80 69.79 30.00
5 38 41 49 47 38 24 22 26 36 50 42 22 16 34 48 46 35 44 43 24 27 41 35 45 37 31 24 25 32 26 36 34.94 50.14 31.00
6 45 39 39 41 38 38 33 30 38 23 17 29 ~ 36 26 17 21 32 40 41 42 35 40 26 21 23 29 26 32 32 ~ 32.06 44.79 29.00
7 25 31 47 31 20 22 27 18 18 30 37 32 31 38 20 22 52 36 20 26 29 20 25 44 33 41 37 23 17 27 35 29.46 52.33 31.00
8 43 43 33 38 18 29 39 44 32 49 33 23 36 45 54 36 40 53 34 19 25 24 37 36 24 18 29 46 46 36 29 35.13 53.51 31.00
9 41 23 18 31 49 38 46 58 32 32 39 61 56 44 33 36 26 39 49 34 47 37 26 42 63 56 103 62 50 35 ~ 43.46 102.68 30.00
10 25 53 61 59 66 44 21 32 37 37 73 102 96 85 31 74 75 76 88 60 45 64 60 113 77 65 49 68 47 88 68 62.67 112.77 31.00
11 97 88 82 54 50 29 106 124 117 106 81 58 101 102 118 141 65 57 84 119 103 146 135 114 67 66 90 115 76 58 ~ 91.64 145.69 30.00
12 56 60 57 57 47 44 41 75 76 64 184 423 87 37 56 23 35 100 109 109 63 54 73 68 52 74 76 125 131 110 50 84.58 422.50 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. 23 38 21 4 2 0 0 0 88 65 27 6 2 0 0 0 163
REL. 26.1 43.1 23.8 4.5 2.2 0.0 0.0 0.0 100.0 73.9 30.7 6.8 2.3 0.0 0.0 0.04.1
ID 26 43 23 9 11 0 0 0 113
ABS. 41 47 2 0 0 0 0 0 90 49 2 0 0 0 0 0 70
REL. 45.5 52.2 2.2 0.0 0.0 0.0 0.0 0.0 100.0 54.4 2.2 0.0 0.0 0.0 0.0 0.0 3.4
ID 45 52 2 0 0 0 0 0 100
ABS. 42 49 0 1 0 0 0 0 92 50 1 1 0 0 0 0 103
REL. 45.6 53.2 0.0 1.0 0.0 0.0 0.0 0.0100.0 54.3 1.1 1.1 0.0 0.0 0.0 0.0 27.9
ID 45 53 0 2 0 0 0 0 101
ABS. 6 36 26 22 1 0 0 1 92 86 50 24 2 1 1 1 423
REL 6.5 39.1 28.2 23.9 1.0 0.0 0.0 1.0100.0 93.5 54.3 26.1 2.2 1.1 1.1 1.112.12
ID 6 39 28 47 5 0 0 679 806
Year
ABS. 112 170 49 27 3 0 0 1 362 250 80 31 4 1 1 1 423
REL. 30.9 46.9 13.5 7.4 0.8 0.0 0.0 0.2100.0 69.1 22.1 8.6 1.1 0.3 0.3 0.312.12
ID 30 46 13 14 4 0 0 172 283

Note:

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