Detailed overview of ambient air pollution valuis from individual stations

Year: 1998
Pollutant:NOx-nitrogen oxides(oxides of nitrogen)
Station:1019 - Hradek n.Nisou
Code:CZLBCMHRN
Institution:CHMI
Region:Severocesky
District:Liberec
IHd: 100
Measure method:chemiluminescence
Unit:ug/m^3

Average daily concentrations

Day/
Month

12345678910111213141516171819202122232425262728293031XMaxN
1 16 14 10 7.67 9 13 16 11 14 19 15 21 25 30 37 28 13 14 17 13 16 14 16 20 38 54 41 50 43 37 30 22.53 54.12 31.00
2 21 25 21 24 43 80 26 17 29 60 45 21 24 23 18 17 15 31 33 28 22 24 25 27 19 19 21 9 ~ ~ ~ 27.43 80.47 28.00
3 10 14 16 12 9 17 13 9 13 23 13 21 15 10 20 23 15 15 10 11 12 11 15 22 25 16 25 32 14 13 20 15.92 31.65 31.00
4 22 17 13 11 11 11 12 12 16 12 14 11 16 23 13 20 23 14 15 21 23 18 17 17 14 13 12 13 12 19 ~ 15.45 23.09 30.00
5 12 12 12 11 14 17 19 16 13 13 15 18 16 20 13 12 15 19 17 15 11 10 12 12 19 18 17 11 14 12 11 14.42 20.33 31.00
6 12 13 17 15 14 12 12 16 16 12 13 12 7.75 17 14 13 12 13 16 14 16 12 13 15 16 13 14 47 25 17 ~ 15.27 47.36 30.00
7 16 16 16 12 10 12 15 10 13 13 10 13 13 12 14 13 12 12 12 13 13 16 13 15 14 13 12 13 13 12 16 13.03 16.40 31.00
8 14 11 17 16 16 15 19 17 13 15 17 14 17 17 16 16 18 23 18 15 14 10 11 13 15 18 11 10 11 13 15 14.93 23.07 31.00
9 18 19 16 16 14 19 16 15 11 ~ 11 11 8.26 11 12 14 16 13 16 16 20 21 21 21 19 17 23 24 24 14 ~ 16.44 24.49 29.00
10 13 15 12 10 18 18 33 34 34 13 13 12 14 21 17 17 16 11 29 16 19 24 22 13 7.80 12 11 9 10 11 13 16.67 34.09 31.00
11 8.02 14 15 15 18 15 28 17 24 42 13 24 22 17 21 17 14 17 26 16 28 54 72 117 57 61 52 41 37 30 ~ 31.15 116.93 30.00
12 23 41 33 30 18 12 19 24 86 173 50 45 17 28 33 22 44 43 26 16 15 41 27 17 18 15 15 18 40 16 14 32.77 173.14 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. 79 10 1 0 0 0 0 0 90 11 1 0 0 0 0 0 80
REL. 87.7 11.1 1.1 0.0 0.0 0.0 0.0 0.0 100.0 12.2 1.1 0.0 0.0 0.0 0.0 0.06.2
ID 87 11 1 0 0 0 0 0 100
ABS. 90 1 0 0 0 0 0 0 91 1 0 0 0 0 0 0 47
REL. 98.9 1.0 0.0 0.0 0.0 0.0 0.0 0.0 100.0 1.1 0.0 0.0 0.0 0.0 0.0 0.0 28.6
ID 98 1 0 0 0 0 0 0 100
ABS. 91 0 0 0 0 0 0 0 91 0 0 0 0 0 0 0 24
REL.100.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0100.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 28.9
ID 100 0 0 0 0 0 0 0 100
ABS. 72 16 2 1 1 0 0 0 92 20 4 2 1 0 0 0 173
REL 78.2 17.3 2.1 1.0 1.0 0.0 0.0 0.0100.0 21.7 4.3 2.2 1.1 0.0 0.0 0.010.12
ID 78 17 2 2 5 0 0 0 105
Year
ABS. 332 27 3 1 1 0 0 0 364 32 5 2 1 0 0 0 173
REL. 91.2 7.4 0.8 0.2 0.2 0.0 0.0 0.0100.0 8.8 1.4 0.5 0.3 0.0 0.0 0.010.12
ID 91 7 1 0 0 0 101

Note:

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