Detailed overview of ambient air pollution valuis from individual stations

Year: 1999
Pollutant:NOx-nitrogen oxides(oxides of nitrogen)
Station:1016 - Liberec-mesto
Code:CZLBCMLIM
Institution:Czech Hydrometeorological Institute
Region:Severocesky
District:Liberec
IHd: 100
Measure method:chemiluminescence
Unit:ug/m^3

Average daily concentrations

Day/
Month

12345678910111213141516171819202122232425262728293031XMaxN
1 15 19 32 56 52 52 35 64 27 30 26 33 49 47 43 30 31 48 42 36 38 58 41 28 37 58 46 58 17 15 22 38.20 63.52 31.00
2 57 34 60 40 13 14 24 27 34 79 61 17 15 19 41 33 18 24 62 46 30 24 23 27 24 56 42 77 ~ ~ ~ 36.48 78.90 28.00
3 28 41 43 48 45 30 30 45 45 45 22 69 38 34 24 24 46 56 32 23 ~ 51 34 38 40 71 21 16 25 58 89 40.37 89.16 30.00
4 71 66 47 29 33 51 25 19 45 49 27 28 28 22 22 26 17 27 41 49 32 49 39 31 18 43 24 39 39 61 ~ 36.47 70.62 30.00
5 19 32 38 31 29 21 21 20 36 28 28 35 31 36 11 33 40 26 23 35 44 18 32 37 29 40 44 32 25 24 24 29.71 44.04 31.00
6 27 26 31 29 27 20 33 33 40 31 23 14 14 17 24 23 20 20 24 24 19 17 32 41 30 21 21 32 36 28 ~ 25.86 41.34 30.00
7 30 34 19 16 13 14 15 14 18 15 21 30 21 22 25 27 22 30 28 22 19 24 18 15 27 14 16 27 31 32 29 22.15 34.29 31.00
8 32 37 40 44 32 34 22 31 32 30 22 30 31 21 21 27 27 26 21 28 19 34 41 46 43 19 26 17 29 61 45 31.19 61.43 31.00
9 19 35 47 25 25 26 48 64 90 83 40 42 49 65 73 50 51 28 11 17 34 41 38 49 28 26 40 38 30 28 ~ 41.30 90.49 30.00
10 23 18 20 34 40 27 40 44 21 31 44 70 77 30 29 21 44 102 123 71 18 20 17 18 43 26 33 47 48 19 57 40.50 122.96 31.00
11 33 34 91 126 28 31 47 43 42 35 37 54 36 26 56 39 57 53 46 26 36 63 37 57 100 66 39 35 45 49 ~ 48.89 125.51 30.00
12 35 25 35 57 20 47 31 60 50 57 29 18 34 50 25 44 42 42 31 42 46 73 38 23 25 24 56 56 36 49 46 40.20 72.66 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. 38 46 5 0 0 0 0 0 89 51 5 0 0 0 0 0 89
REL. 42.6 51.6 5.6 0.0 0.0 0.0 0.0 0.0 100.0 57.3 5.6 0.0 0.0 0.0 0.0 0.031.3
ID 42 51 5 0 0 0 0 0 100
ABS. 64 26 1 0 0 0 0 0 91 27 1 0 0 0 0 0 71
REL. 70.3 28.5 1.0 0.0 0.0 0.0 0.0 0.0 100.0 29.7 1.1 0.0 0.0 0.0 0.0 0.0 1.4
ID 70 28 1 0 0 0 0 0 100
ABS. 62 27 3 0 0 0 0 0 92 30 3 0 0 0 0 0 90
REL. 67.3 29.3 3.2 0.0 0.0 0.0 0.0 0.0100.0 32.6 3.3 0.0 0.0 0.0 0.0 0.0 9.9
ID 67 29 3 0 0 0 0 0 100
ABS. 31 52 5 4 0 0 0 0 92 61 9 4 0 0 0 0 126
REL 33.6 56.5 5.4 4.3 0.0 0.0 0.0 0.0100.0 66.3 9.8 4.3 0.0 0.0 0.0 0.0 4.11
ID 33 56 5 8 0 0 0 0 104
Year
ABS. 195 151 14 4 0 0 0 0 364 169 18 4 0 0 0 0 126
REL. 53.5 41.4 3.8 1.0 0.0 0.0 0.0 0.0100.0 46.4 4.9 1.1 0.0 0.0 0.0 0.0 4.11
ID 53 41 3 2 0 0 0 0 101

Note:

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