Detailed overview of ambient air pollution valuis from individual stations

Year: 2002
Pollutant:NOx-nitrogen oxides(oxides of nitrogen)
Station:1105 - Plzen-Doubravka
Code:CZPMCMDOU
Institution:Czech Hydrometeorological Institute
Region:Plzensky
District:Plzen-mesto
IHd: 100
Measure method:chemiluminescence
Unit:ug/m^3

Average daily concentrations

Day/
Month

12345678910111213141516171819202122232425262728293031XMaxN
1 28 20 19 77 198 96 91 41 38 50 71 61 34 33 23 34 45 44 39 21 34 37 57 29 26 19 16 18 30 73 62 47.27 198.18 31.00
2 48 54 24 74 106 74 34 33 17 18 26 20 24 13 16 14 49 51 28 24 18 25 17 16 28 22 18 27 ~ ~ ~ 32.74 105.87 28.00
3 36 21 23 26 32 52 22 23 36 32 49 25 46 14 22 21 17 30 28 25 29 15 7.26 ~ ~ ~ ~ 18 17 21 32 26.67 51.52 27.00
4 20 14 13 15 12 15 11 13 14 17 13 13 14 21 29 36 39 36 27 16 15 28 28 15 27 23 10 15 16 15 ~ 19.24 39.32 30.00
5 13 13 16 17 16 19 10 6.93 6.70 12 13 15 16 18 18 30 20 11 19 21 10 9 12 21 17 13 14 21 16 20 15 15.49 29.50 31.00
6 12 12 13 19 10 10 12 17 13 20 22 20 19 19 16 12 23 10 12 15 16 18 11 10 8.90 20 15 11 16 19 ~ 15.05 22.72 30.00
7 20 15 12 14 8.98 9 12 12 13 13 17 8.78 9 10 11 10 21 18 14 18 20 20 23 16 15 ~ 12 10 9 10 19 14.02 23.47 30.00
8 16 17 9 16 17 11 17 25 23 8.06 ~ ~ ~ ~ ~ ~ 7.55 8.61 10 9 19 18 10 11 9 8.15 15 18 18 20 17 14.28 24.56 25.00
9 7.74 8.51 10 18 26 28 16 8.47 12 29 27 11 17 14 15 25 22 14 20 27 19 16 9 7.65 21 33 16 15 21 44 ~ 18.60 44.47 30.00
10 43 57 42 30 14 14 17 11 10 17 14 13 ~ 30 38 41 20 25 17 17 56 62 21 27 24 8.73 10 18 39 32 32 26.54 61.76 30.00
11 46 15 12 ~ 14 16 36 26 13 15 42 55 89 28 61 38 31 21 33 25 15 34 27 16 23 47 27 18 28 27 ~ 30.25 89.38 29.00
12 18 39 31 41 19 19 20 19 25 24 32 20 42 19 18 82 66 28 40 59 52 41 26 15 13 13 24 30 22 25 11 30.16 82.08 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. 54 23 7 1 1 0 0 0 86 32 9 2 1 0 0 0 198
REL. 62.7 26.7 8.1 1.1 1.1 0.0 0.0 0.0 100.0 37.2 10.5 2.3 1.2 0.0 0.0 0.05.1
ID 62 26 8 2 5 0 0 0 105
ABS. 88 3 0 0 0 0 0 0 91 3 0 0 0 0 0 0 39
REL. 96.7 3.2 0.0 0.0 0.0 0.0 0.0 0.0 100.0 3.3 0.0 0.0 0.0 0.0 0.0 0.0 17.4
ID 96 3 0 0 0 0 0 0 100
ABS. 84 1 0 0 0 0 0 0 85 1 0 0 0 0 0 0 44
REL. 98.8 1.1 0.0 0.0 0.0 0.0 0.0 0.0100.0 1.2 0.0 0.0 0.0 0.0 0.0 0.0 30.9
ID 98 1 0 0 0 0 0 0 100
ABS. 64 24 2 0 0 0 0 0 90 26 2 0 0 0 0 0 89
REL 71.1 26.6 2.2 0.0 0.0 0.0 0.0 0.0100.0 28.9 2.2 0.0 0.0 0.0 0.0 0.013.11
ID 71 26 2 0 0 0 0 0 100
Year
ABS. 290 51 9 1 1 0 0 0 352 62 11 2 1 0 0 0 198
REL. 82.3 14.4 2.5 0.2 0.2 0.0 0.0 0.0100.0 17.6 3.1 0.6 0.3 0.0 0.0 0.0 5.1
ID 82 14 2 1 0 0 0 101

Note:

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