Detailed overview of ambient air pollution valuis from individual stations

Year: 1999
Pollutant:NOx-nitrogen oxides(oxides of nitrogen)
Station:1025 - Litomerice-Mlekojedy
Code:CZLTCMLIM
Institution:Czech Hydrometeorological Institute
Region:Severocesky
District:Litomerice
IHd: 100
Measure method:chemiluminescence
Unit:ug/m^3

Average daily concentrations

Day/
Month

12345678910111213141516171819202122232425262728293031XMaxN
1 16 18 34 53 77 160 58 41 17 14 26 31 49 29 30 52 32 61 43 47 37 52 47 61 57 37 58 32 12 14 32 42.84 160.07 31.00
2 61 72 50 30 9 13 20 27 82 127 38 14 13 24 86 30 11 24 64 60 23 22 14 20 32 73 56 36 ~ ~ ~ 40.33 126.51 28.00
3 17 52 44 33 49 ~ ~ ~ 67 39 18 49 29 43 22 22 31 53 34 14 23 23 26 58 73 56 17 16 29 59 47 37.28 73.28 28.00
4 44 34 33 31 36 43 29 19 45 38 22 23 21 22 24 15 14 38 36 50 41 49 30 22 24 38 22 29 34 28 ~ 31.23 50.31 30.00
5 22 29 19 13 13 18 17 30 68 23 26 23 23 22 9 22 14 12 14 15 25 18 29 21 22 23 31 21 16 18 19 21.82 68.21 31.00
6 20 18 24 18 17 15 21 19 20 ~ ~ ~ ~ ~ 19 19 16 14 ~ ~ ~ 9 14 25 17 17 15 22 26 18 ~ 18.32 25.61 22.00
7 21 26 13 10 10 13 12 12 8.48 7.45 9 12 14 19 18 18 17 29 20 24 16 19 13 11 19 14 11 16 18 18 14 15.65 29.18 31.00
8 22 20 29 27 26 32 22 17 17 23 20 20 23 16 18 23 23 25 21 18 16 22 26 35 27 15 18 11 22 25 35 22.47 35.03 31.00
9 15 24 25 13 16 20 29 33 43 29 18 37 40 46 47 36 32 34 16 18 37 46 45 34 36 24 25 36 20 21 ~ 29.90 46.51 30.00
10 24 19 15 25 38 29 27 33 22 22 30 30 51 35 42 27 25 52 39 23 16 16 19 24 55 41 26 47 59 43 36 31.94 58.82 31.00
11 123 54 45 57 87 24 31 45 30 31 25 37 25 18 40 26 39 26 30 27 26 28 43 100 161 132 58 80 40 47 ~ 51.12 160.57 30.00
12 26 17 18 18 12 21 14 25 41 39 25 11 20 34 17 22 33 23 26 34 51 63 52 18 21 27 31 24 35 28 33 27.76 62.62 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. 43 35 7 1 1 0 0 0 87 44 9 2 1 0 0 0 160
REL. 49.4 40.2 8.0 1.1 1.1 0.0 0.0 0.0 100.0 50.6 10.3 2.3 1.1 0.0 0.0 0.06.1
ID 49 40 8 2 5 0 0 0 105
ABS. 69 13 1 0 0 0 0 0 83 14 1 0 0 0 0 0 68
REL. 83.1 15.6 1.2 0.0 0.0 0.0 0.0 0.0 100.0 16.9 1.2 0.0 0.0 0.0 0.0 0.0 9.5
ID 83 15 1 0 0 0 0 0 100
ABS. 77 15 0 0 0 0 0 0 92 15 0 0 0 0 0 0 47
REL. 83.6 16.3 0.0 0.0 0.0 0.0 0.0 0.0100.0 16.3 0.0 0.0 0.0 0.0 0.0 0.0 15.9
ID 83 16 0 0 0 0 0 0 100
ABS. 54 32 2 3 1 0 0 0 92 38 6 4 1 0 0 0 161
REL 58.6 34.7 2.1 3.2 1.0 0.0 0.0 0.0100.0 41.3 6.5 4.3 1.1 0.0 0.0 0.025.11
ID 58 34 2 6 5 0 0 0 107
Year
ABS. 243 95 10 4 2 0 0 0 354 111 16 6 2 0 0 0 161
REL. 68.6 26.8 2.8 1.1 0.5 0.0 0.0 0.0100.0 31.4 4.5 1.7 0.6 0.0 0.0 0.025.11
ID 68 26 2 2 2 0 0 0 103

Note:

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