Detailed overview of ambient air pollution valuis from individual stations

Year: 2000
Pollutant:NOx-nitrogen oxides(oxides of nitrogen)
Station:1014 - Decin
Code:CZDCCMDEC
Institution:Czech Hydrometeorological Institute
Region:Severocesky
District:Decin
IHd: 100
Measure method:chemiluminescence
Unit:ug/m^3

Average daily concentrations

Day/
Month

12345678910111213141516171819202122232425262728293031XMaxN
1 44 117 71 74 101 93 55 53 38 67 71 51 28 48 71 69 29 32 50 57 57 36 56 110 150 140 69 101 42 53 68 67.73 149.97 31.00
2 176 115 57 93 74 107 119 49 30 41 79 53 36 59 91 115 69 50 48 35 55 137 139 109 83 83 43 30 33 ~ ~ 76.10 176.06 29.00
3 51 54 37 21 31 66 57 74 29 63 37 33 69 69 37 55 50 46 37 52 57 67 99 155 74 33 31 38 31 33 64 53.25 155.20 31.00
4 58 52 44 66 36 29 34 32 33 35 50 68 27 50 37 41 36 41 46 34 45 31 19 13 34 47 36 10 17 28 ~ 37.69 68.12 30.00
5 30 28 38 35 32 25 21 27 33 39 41 22 18 22 36 38 37 42 32 23 21 40 37 41 35 23 26 24 36 27 30 30.88 41.61 31.00
6 43 38 29 29 32 36 35 26 25 20 16 30 28 33 30 28 28 29 30 37 35 27 33 25 18 32 43 38 46 48 ~ 31.55 47.96 30.00
7 37 32 43 36 34 26 23 20 21 30 30 36 38 34 28 23 47 45 29 34 38 27 21 37 36 35 38 28 24 27 38 32.13 46.68 31.00
8 34 38 25 34 20 31 40 35 33 43 33 24 24 35 41 31 35 46 38 26 28 30 38 44 40 16 19 45 36 47 36 33.62 46.54 31.00
9 43 28 25 33 51 43 47 52 29 25 43 49 52 48 22 31 21 29 34 28 44 42 30 43 72 63 84 52 41 30 ~ 41.23 84.35 30.00
10 22 51 57 70 58 44 29 30 35 35 77 112 119 50 38 61 79 72 82 30 26 56 56 58 64 94 67 52 44 77 100 59.54 118.90 31.00
11 106 76 86 74 55 18 95 104 110 105 83 46 103 109 121 114 83 76 98 106 135 123 124 98 75 74 100 83 49 48 ~ 89.21 134.88 30.00
12 56 52 52 40 38 35 31 58 80 56 144 207 115 77 50 34 47 96 113 104 61 34 53 53 38 60 72 140 128 138 51 74.62 206.65 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 41 22 13 2 0 0 0 91 78 37 15 2 0 0 0 176
REL. 14.2 45.0 24.1 14.2 2.1 0.0 0.0 0.0 100.0 85.7 40.7 16.5 2.2 0.0 0.0 0.01.2
ID 14 45 24 28 10 0 0 0 123
ABS. 48 42 1 0 0 0 0 0 91 43 1 0 0 0 0 0 68
REL. 52.7 46.1 1.0 0.0 0.0 0.0 0.0 0.0 100.0 47.3 1.1 0.0 0.0 0.0 0.0 0.0 12.4
ID 52 46 1 0 0 0 0 0 100
ABS. 40 50 2 0 0 0 0 0 92 52 2 0 0 0 0 0 84
REL. 43.4 54.3 2.1 0.0 0.0 0.0 0.0 0.0100.0 56.5 2.2 0.0 0.0 0.0 0.0 0.0 27.9
ID 43 54 2 0 0 0 0 0 100
ABS. 7 37 26 21 0 1 0 0 92 85 48 22 1 1 0 0 207
REL 7.6 40.2 28.2 22.8 0.0 1.0 0.0 0.0100.0 92.4 52.2 23.9 1.1 1.1 0.0 0.012.12
ID 7 40 28 45 0 27 0 0 148
Year
ABS. 108 170 51 34 2 1 0 0 366 258 88 37 3 1 0 0 207
REL. 29.5 46.4 13.9 9.2 0.5 0.2 0.0 0.0100.0 70.5 24.0 10.1 0.8 0.3 0.0 0.012.12
ID 29 46 13 18 2 6 0 0 118

Note:

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