Detailed overview of ambient air pollution valuis from individual stations

Year: 1998
Pollutant:NOx-nitrogen oxides(oxides of nitrogen)
Station:1013 - Sneznik
Code:CZDCCMSNE
Institution:CHMI
Region:Severocesky
District:Decin
IHd: 100
Measure method:chemiluminescence
Unit:ug/m^3

Average daily concentrations

Day/
Month

12345678910111213141516171819202122232425262728293031XMaxN
1 61 31 18 14 14 18 35 10 12 41 59 106 85 122 75 42 21 22 26 13 18 16 13 24 22 35 48 26 26 26 11 35.16 122.49 31.00
2 27 59 18 59 63 41 50 23 73 43 50 15 18 18 15 27 10 31 40 38 41 49 22 24 17 24 27 10 ~ ~ ~ 33.27 72.89 28.00
3 10 20 36 20 9 25 7.56 6.49 11 12 13 26 13 8.91 12 11 14 12 8.18 9 8.63 8.57 9 28 13 17 36 20 14 18 45 16.18 45.12 31.00
4 31 29 22 20 18 12 18 15 18 12 15 10 8.45 16 16 16 13 12 9 18 22 12 14 21 18 13 11 17 10 11 ~ 15.92 30.84 30.00
5 9 11 8.79 8.70 13 30 25 15 11 10 11 10 8.70 8.21 8.68 8.94 8.17 10 12 10 7.03 7.33 8.81 10 21 32 19 11 13 14 21 12.91 31.98 31.00
6 12 20 13 11 11 12 12 17 21 18 ~ ~ ~ 12 12 12 8.93 11 14 11 14 ~ 20 25 ~ 18 24 11 13 20 ~ 14.90 24.67 25.00
7 16 11 12 7.97 7.16 10 9 7.64 11 13 9 17 12 8.27 12 12 17 12 9 12 10 14 14 14 11 10 ~ 13 22 ~ 15 12.01 21.51 29.00
8 14 14 12 20 12 15 13 13 8.24 12 25 ~ 14 21 22 11 20 15 22 21 24 8.03 10 13 10 14 8.16 9 7.45 10 8.69 14.27 25.29 30.00
9 8.31 10 11 12 8.24 12 14 ~ 18 19 18 9 12 19 13 18 19 12 12 11 8.60 11 ~ 17 38 41 29 14 18 15 ~ 16.05 40.61 28.00
10 15 14 14 16 18 16 19 31 39 18 21 10 15 37 14 27 23 8.78 19 18 35 56 27 13 14 13 22 12 14 11 13 20.16 55.65 31.00
11 8.07 16 39 23 27 15 19 52 42 15 12 35 42 23 17 16 12 12 15 13 14 19 15 75 65 55 67 62 24 24 ~ 29.09 74.77 30.00
12 21 21 32 36 10 7.91 14 13 46 36 60 110 17 20 38 16 51 94 30 14 10 22 39 29 25 20 28 32 35 17 14 30.80 109.54 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. 64 21 3 2 0 0 0 0 90 26 5 2 0 0 0 0 122
REL. 71.1 23.3 3.3 2.2 0.0 0.0 0.0 0.0 100.0 28.9 5.6 2.2 0.0 0.0 0.0 0.014.1
ID 71 23 3 4 0 0 0 0 102
ABS. 86 0 0 0 0 0 0 0 86 0 0 0 0 0 0 0 32
REL.100.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 100.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 26.5
ID 100 0 0 0 0 0 0 0 100
ABS. 85 2 0 0 0 0 0 0 87 2 0 0 0 0 0 0 41
REL. 97.7 2.2 0.0 0.0 0.0 0.0 0.0 0.0100.0 2.3 0.0 0.0 0.0 0.0 0.0 0.0 26.9
ID 97 2 0 0 0 0 0 0 100
ABS. 68 20 3 1 0 0 0 0 92 24 4 1 0 0 0 0 110
REL 73.9 21.7 3.2 1.0 0.0 0.0 0.0 0.0100.0 26.1 4.3 1.1 0.0 0.0 0.0 0.012.12
ID 73 21 3 2 0 0 0 0 101
Year
ABS. 303 43 6 3 0 0 0 0 355 52 9 3 0 0 0 0 122
REL. 85.3 12.1 1.6 0.8 0.0 0.0 0.0 0.0100.0 14.6 2.5 0.8 0.0 0.0 0.0 0.0 14.1
ID 85 12 1 1 0 0 0 0 100

Note:

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