Detailed overview of ambient air pollution valuis from individual stations

Year: 1998
Pollutant:NOx-nitrogen oxides(oxides of nitrogen)
Station: 538 - Liberec-stred mesta
Code:CZLBHSLSM
Institution:Public Health Service
Region:Severocesky
District:Liberec
IHd: 100
Measure method:trithanolamine spectophotometry
Unit:ug/m^3

Average daily concentrations

Day/
Month

12345678910111213141516171819202122232425262728293031XMaxN
1 50 65 61 ~ 68 54 51 40 30 24 39 28 36 19 23 28 25 12 24 34 ~ ~ ~ ~ 62 26 35 52 ~ ~ ~ 38.52 68.00 23.00
2 ~ ~ ~ ~ ~ ~ 66 46 69 25 55 66 56 69 53 41 50 40 65 84 42 50 37 54 29 110 34 67 ~ ~ ~ 54.91 110.00 22.00
3 65 50 13 24 23 25 29 22 46 50 77 42 47 41 15 15 31 26 52 32 22 39 36 44 65 36 74 94 49 35 30 40.29 94.00 31.00
4 45 29 25 24 25 30 42 83 28 31 42 25 7.00 24 17 36 36 15 40 33 13 ~ 46 34 38 56 42 22 20 10 ~ 31.66 83.00 29.00
5 ~ 61 35 6.00 21 60 17 12 20 58 52 10 28 6.00 62 ~ ~ ~ ~ 61 12 15 19 25 27 26 34 42 10 63 15 30.65 63.00 26.00
6 9.00 11 64 39 37 26 22 60 38 29 29 15 15 13 19 26 12 38 19 32 34 27 38 24 17 59 33 66 49 68 ~ 32.27 68.00 30.00
7 42 37 33 82 28 ~ ~ ~ ~ ~ ~ ~ 8.00 40 ~ ~ 64 43 ~ 41 27 23 10 22 12 ~ 15 16 21 20 27 30.55 82.00 20.00
8 24 25 8.00 13 39 43 34 24 18 13 39 23 89 ~ ~ ~ 35 ~ ~ 14 4.00 11 ~ 21 12 ~ ~ 4.00 4.00 10 4.00 22.22 89.00 23.00
9 15 8.00 7.00 7.00 9.00 12 7.00 4.00 4.00 ~ 4.00 4.00 4.00 6.00 4.00 6.00 6.00 4.00 4.00 4.00 ~ ~ 7.00 25 23 25 19 16 19 26 ~ 10.33 26.00 27.00
10 ~ 25 27 72 39 9.00 13 6.00 38 28 27 ~ 21 37 36 13 65 ~ ~ ~ 64 ~ 10 21 18 54 39 24 ~ ~ ~ 31.18 72.00 22.00
11 ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
12 ~ ~ ~ ~ 7.00 9.00 10 23 18 49 28 ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ 12 22 36 15 ~ 32 25 ~ ~ 22.00 49.00 13.00

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. 25 42 8 1 0 0 0 0 76 51 9 1 0 0 0 0 110
REL. 32.8 55.2 10.5 1.3 0.0 0.0 0.0 0.0 100.0 67.1 11.8 1.3 0.0 0.0 0.0 0.026.2
ID 32 55 10 2 0 0 0 0 101
ABS. 51 32 2 0 0 0 0 0 85 34 2 0 0 0 0 0 83
REL. 60.0 37.6 2.3 0.0 0.0 0.0 0.0 0.0 100.0 40.0 2.4 0.0 0.0 0.0 0.0 0.0 8.4
ID 60 37 2 0 0 0 0 0 100
ABS. 57 11 2 0 0 0 0 0 70 13 2 0 0 0 0 0 89
REL. 81.4 15.7 2.8 0.0 0.0 0.0 0.0 0.0100.0 18.6 2.9 0.0 0.0 0.0 0.0 0.0 13.8
ID 81 15 2 0 0 0 0 0 100
ABS. 24 10 1 0 0 0 0 0 351 11 1 0 0 0 0 0 72
REL 68.5 28.5 2.8 0.0 0.0 0.0 0.0 0.0100.0 31.4 2.9 0.0 0.0 0.0 0.0 0.0 4.10
ID 68 28 2 0 0 0 0 0 100
Year
ABS. 157 95 13 1 0 0 0 0 266 109 14 1 0 0 0 0 110
REL. 59.0 35.7 4.8 0.3 0.0 0.0 0.0 0.0100.0 41.0 5.3 0.4 0.0 0.0 0.0 0.0 26.2
ID 59 35 4 0 0 0 0 100

Note:

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