Detailed overview of ambient air pollution valuis from individual stations

Year: 1998
Pollutant:NOx-nitrogen oxides(oxides of nitrogen)
Station:1016 - Liberec-mesto
Code:CZLBCMLIM
Institution:CHMI
Region:Severocesky
District:Liberec
IHd: 100
Measure method:chemiluminescence
Unit:ug/m^3

Average daily concentrations

Day/
Month

12345678910111213141516171819202122232425262728293031XMaxN
1 24 30 18 16 24 24 40 31 27 61 28 37 39 53 55 50 41 23 37 32 20 63 88 38 106 137 123 108 99 63 55 51.17 136.83 31.00
2 35 45 64 82 101 272 43 33 59 166 137 119 34 76 57 31 64 115 48 45 31 47 52 76 39 66 34 17 ~ ~ ~ 71.03 272.45 28.00
3 19 40 36 31 20 41 21 13 31 53 43 38 25 17 54 42 25 27 17 24 15 31 62 60 ~ ~ 56 74 37 25 46 35.34 73.84 29.00
4 42 46 31 19 27 29 29 25 45 21 44 17 47 44 27 70 60 21 59 63 51 66 34 36 24 16 20 31 21 27 ~ 36.43 69.80 30.00
5 14 17 18 21 30 36 42 34 20 27 29 13 12 ~ ~ ~ ~ ~ 40 30 26 18 17 20 46 37 46 24 25 20 17 26.11 46.37 26.00
6 29 25 48 47 20 15 17 37 33 20 18 18 19 28 34 27 26 38 22 26 33 24 20 31 25 24 15 22 27 24 ~ 26.41 48.38 30.00
7 34 41 17 11 10 18 18 16 18 25 13 17 19 25 25 23 24 17 33 32 20 31 23 23 11 30 27 23 21 21 32 22.51 40.69 31.00
8 24 12 24 18 17 31 32 26 33 34 53 31 36 34 27 29 46 33 43 38 22 14 20 18 32 46 27 19 12 33 44 29.29 52.72 31.00
9 66 51 23 20 7.80 23 25 17 14 28 42 22 22 24 24 40 33 31 44 33 31 52 56 67 37 27 49 80 48 52 ~ 36.25 80.35 30.00
10 27 26 19 22 29 32 39 51 53 18 25 40 46 41 83 55 24 55 103 44 34 45 40 30 24 50 26 14 22 23 22 37.47 103.24 31.00
11 14 46 52 ~ ~ ~ 87 41 56 135 31 73 48 28 27 30 26 46 67 18 64 139 179 220 90 85 78 85 64 55 ~ 69.83 220.05 27.00
12 39 114 41 50 31 18 29 39 216 211 68 56 23 114 225 39 153 70 36 25 30 73 55 23 23 27 26 34 85 28 18 65.11 224.70 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. 31 41 6 8 1 1 0 0 88 57 16 10 2 1 0 0 272
REL. 35.2 46.5 6.8 9.0 1.1 1.1 0.0 0.0 100.0 64.8 18.2 11.4 2.3 1.1 0.0 0.06.2
ID 35 46 6 18 5 28 0 0 140
ABS. 60 25 1 0 0 0 0 0 86 26 1 0 0 0 0 0 70
REL. 69.7 29.0 1.1 0.0 0.0 0.0 0.0 0.0 100.0 30.2 1.2 0.0 0.0 0.0 0.0 0.0 16.4
ID 69 29 1 0 0 0 0 0 100
ABS. 68 22 2 0 0 0 0 0 92 24 2 0 0 0 0 0 80
REL. 73.9 23.9 2.1 0.0 0.0 0.0 0.0 0.0100.0 26.1 2.2 0.0 0.0 0.0 0.0 0.0 28.9
ID 73 23 2 0 0 0 0 0 100
ABS. 35 31 12 5 2 4 0 0 89 54 23 11 6 4 0 0 225
REL 39.3 34.8 13.4 5.6 2.2 4.4 0.0 0.0100.0 60.7 25.8 12.4 6.7 4.5 0.0 0.015.12
ID 39 34 13 11 11 112 0 0 222
Year
ABS. 194 119 21 13 3 5 0 0 355 161 42 21 8 5 0 0 272
REL. 54.6 33.5 5.9 3.6 0.8 1.4 0.0 0.0100.0 45.4 11.8 5.9 2.3 1.4 0.0 0.0 6.2
ID 54 33 5 7 4 35 0 0 140

Note:

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