Detailed overview of ambient air pollution valuis from individual stations

1026 - Louny

Year: 1997
Pollutant:NOx-nitrogen oxides(oxides of nitrogen)
Station:1026 - Louny
Code:CZLNCMLOU
Institution:CHMI
Region:Severocesky
District:Louny
IHd: 100
Measure method:chemiluminescence
Unit:ug/m^3

Average daily concentrations

Day/
Month

12345678910111213141516171819202122232425262728293031XMaxN
1 80 88 56 59 53 71 78 94 60 89 53 29 65 151 166 190 171 121 109 88 106 49 60 80 62 34 90 57 53 36 31 81.63 189.99 31.00
2 35 52 95 58 40 39 81 102 68 50 29 35 19 25 27 24 41 41 23 19 18 25 61 41 17 21 31 41 ~ ~ ~ 41.40 101.93 28.00
3 ~ ~ ~ 32 58 73 54 41 37 56 69 76 42 38 24 22 34 32 37 26 38 25 22 31 47 38 33 15 18 19 34 38.29 75.99 28.00
4 52 46 35 18 19 21 27 35 54 36 24 19 27 25 25 21 47 28 19 23 33 30 37 36 31 29 37 27 28 32 ~ 30.68 54.04 30.00
5 34 28 39 30 23 19 29 24 18 22 24 32 28 31 26 25 18 18 34 25 20 28 25 20 19 24 20 23 20 17 15 24.50 39.10 31.00
6 17 22 25 28 20 19 18 18 20 22 20 31 26 19 23 28 34 32 24 24 15 15 17 23 26 24 30 28 20 25 ~ 23.05 33.87 30.00
7 28 19 32 27 16 22 23 25 26 24 22 20 20 26 29 24 24 26 16 16 26 22 30 33 21 20 15 25 27 30 34 24.00 33.63 31.00
8 24 19 25 36 24 21 24 24 20 22 23 26 28 31 30 20 25 37 32 36 35 30 37 28 32 29 35 24 25 22 29 27.56 36.92 31.00
9 36 31 39 45 32 31 25 23 24 27 43 36 23 39 47 49 52 57 40 29 33 53 49 39 43 55 33 40 70 56 ~ 40.03 70.06 30.00
10 39 20 23 21 34 61 59 48 21 23 14 22 27 31 41 52 66 63 61 54 53 70 44 26 20 27 41 47 93 73 47 42.60 92.68 31.00
11 53 58 44 44 78 80 109 65 57 68 62 55 48 61 44 35 44 31 47 94 86 68 72 68 55 76 62 89 71 50 ~ 62.42 108.92 30.00
12 57 47 63 37 43 31 51 91 81 35 35 27 22 27 21 38 32 36 64 56 65 83 78 28 14 11 21 39 28 52 51 44.01 90.86 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. 26 38 15 4 4 0 0 0 87 61 23 8 4 0 0 0 190
REL. 29.8 43.6 17.2 4.5 4.5 0.0 0.0 0.0 100.0 70.1 26.4 9.2 4.6 0.0 0.0 0.016.1
ID 29 43 17 9 22 0 0 0 122
ABS. 77 14 0 0 0 0 0 0 91 14 0 0 0 0 0 0 54
REL. 84.6 15.3 0.0 0.0 0.0 0.0 0.0 0.0 100.0 15.4 0.0 0.0 0.0 0.0 0.0 0.0 9.4
ID 84 15 0 0 0 0 0 0 100
ABS. 66 25 1 0 0 0 0 0 92 26 1 0 0 0 0 0 70
REL. 71.7 27.1 1.0 0.0 0.0 0.0 0.0 0.0100.0 28.3 1.1 0.0 0.0 0.0 0.0 0.0 29.9
ID 71 27 1 0 0 0 0 0 100
ABS. 24 49 18 1 0 0 0 0 92 68 19 1 0 0 0 0 109
REL 26.0 53.2 19.5 1.0 0.0 0.0 0.0 0.0100.0 73.9 20.7 1.1 0.0 0.0 0.0 0.0 7.11
ID 26 53 19 2 0 0 0 0 101
Year
ABS. 193 126 34 5 4 0 0 0 362 169 43 9 4 0 0 0 190
REL. 53.3 34.8 9.3 1.3 1.1 0.0 0.0 0.0100.0 46.7 11.9 2.5 1.1 0.0 0.0 0.0 16.1
ID 53 34 9 2 5 0 0 0 105

Note:

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

Detailed overview of ambient air pollution valuis from individual stations - selection station