Detailed overview of ambient air pollution valuis from individual stations

1013 - Sneznik

Year: 1997
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 41 38 29 38 27 29 42 42 25 72 73 68 ~ 74 ~ 187 188 183 71 69 39 33 81 91 37 17 48 36 21 13 16 59.55 187.61 29.00
2 19 37 135 71 42 34 66 30 69 52 24 24 18 9 10 11 27 27 17 25 18 19 47 32 22 8.48 15 55 ~ ~ ~ 34.35 135.31 28.00
3 41 33 11 29 56 30 18 34 21 38 61 31 26 25 17 8.68 12 23 22 12 34 8.81 14 ~ 30 51 27 10 8.48 8.96 14 25.13 60.94 30.00
4 21 32 30 12 17 8.84 10 13 ~ 22 17 10 8.69 13 8.70 11 19 17 9 8.13 10 17 20 23 18 16 24 28 18 14 ~ 16.46 31.93 29.00
5 12 15 21 27 22 16 10 10 17 15 10 11 11 16 15 12 11 11 15 17 10 14 15 11 10 11 9 11 10 9 7.18 13.18 26.89 31.00
6 10 8.61 8.63 10 10 10 11 11 11 12 13 17 14 22 11 15 14 18 11 14 14 19 16 9 14 15 12 10 9 11 ~ 12.70 21.81 30.00
7 11 11 14 15 12 9 12 13 12 10 11 8.97 9 14 13 17 14 12 8.59 6.91 10 10 13 13 16 8.99 14 10 11 14 24 12.18 24.25 31.00
8 11 9 13 23 13 10 10 11 13 11 11 12 14 15 15 13 12 15 14 14 14 21 21 25 14 15 13 11 13 10 15 13.97 24.95 31.00
9 22 16 20 23 23 20 13 15 11 10 16 28 10 10 25 25 33 37 19 13 9 15 17 13 13 18 15 24 46 20 ~ 19.22 46.23 30.00
10 21 10 10 13 15 31 40 38 25 23 14 7.69 11 12 13 26 33 35 47 43 12 36 16 13 8.85 11 21 20 16 30 19 21.65 47.42 31.00
11 52 18 13 15 30 30 40 40 36 27 41 27 34 33 43 17 ~ 13 17 35 70 47 76 28 26 42 41 60 60 54 ~ 36.75 75.62 29.00
12 34 24 36 22 13 34 38 74 120 46 38 14 10 8.75 13 22 15 20 36 16 37 50 77 63 20 21 14 27 29 48 67 35.03 119.67 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. 50 23 10 1 3 0 0 0 87 37 14 4 3 0 0 0 188
REL. 57.4 26.4 11.4 1.1 3.4 0.0 0.0 0.0 100.0 42.5 16.1 4.6 3.4 0.0 0.0 0.017.1
ID 57 26 11 2 17 0 0 0 114
ABS. 90 0 0 0 0 0 0 0 90 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 2.4
ID 100 0 0 0 0 0 0 0 100
ABS. 90 2 0 0 0 0 0 0 92 2 0 0 0 0 0 0 46
REL. 97.8 2.1 0.0 0.0 0.0 0.0 0.0 0.0100.0 2.2 0.0 0.0 0.0 0.0 0.0 0.0 29.9
ID 97 2 0 0 0 0 0 0 100
ABS. 53 32 5 1 0 0 0 0 91 38 6 1 0 0 0 0 120
REL 58.2 35.1 5.4 1.0 0.0 0.0 0.0 0.0100.0 41.8 6.6 1.1 0.0 0.0 0.0 0.0 9.12
ID 58 35 5 2 0 0 0 0 101
Year
ABS. 283 57 15 2 3 0 0 0 360 77 20 5 3 0 0 0 188
REL. 78.6 15.8 4.1 0.5 0.8 0.0 0.0 0.0100.0 21.4 5.6 1.4 0.8 0.0 0.0 0.0 17.1
ID 78 15 4 1 4 0 0 0 103

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