Detailed overview of ambient air pollution valuis from individual stations

Year: 1998
Pollutant:NOx-nitrogen oxides(oxides of nitrogen)
Station:1105 - Plzen-Doubravka
Code:CZPMCMDOU
Institution:CHMI
Region:Zapadocesky
District:Plzen-mesto
IHd: 100
Measure method:chemiluminescence
Unit:ug/m^3

Average daily concentrations

Day/
Month

12345678910111213141516171819202122232425262728293031XMaxN
1 38 33 13 18 21 16 26 26 30 49 69 81 40 64 68 31 16 22 25 24 11 15 20 25 21 34 56 71 71 52 18 35.69 80.93 31.00
2 18 55 63 66 86 113 62 38 62 98 75 49 43 34 35 44 35 66 50 48 69 43 38 50 55 51 32 21 ~ ~ ~ 53.49 113.00 28.00
3 19 26 25 22 20 20 19 12 19 20 8.84 27 21 12 14 27 29 32 18 14 8.93 9 9 12 31 27 53 22 13 19 69 21.78 68.58 31.00
4 62 32 30 19 33 33 16 22 20 12 12 23 23 13 17 17 18 25 27 28 23 13 13 36 18 8.62 13 23 12 8.21 ~ 21.74 62.49 30.00
5 12 16 15 ~ ~ 24 ~ ~ ~ ~ 12 10 10 7.65 6.91 5.76 6.75 13 19 18 ~ 12 12 18 25 28 13 10 20 16 13 14.20 27.53 24.00
6 14 14 21 15 8.04 11 15 20 22 12 15 12 7.67 14 15 14 18 21 22 14 24 16 18 22 26 18 13 26 17 20 ~ 16.92 25.89 30.00
7 12 16 15 16 18 22 22 16 21 20 12 23 17 24 20 20 12 11 6.04 16 10 18 18 16 ~ ~ 16 16 16 14 14 16.49 23.83 29.00
8 6.66 6.55 12 14 16 25 24 17 5.72 6.96 25 22 17 13 11 17 26 24 10 22 19 11 10 14 17 16 15 12 16 14 20 15.69 25.66 31.00
9 14 10 11 10 12 14 12 20 27 23 17 12 16 18 20 19 20 15 11 5.93 7.79 10 14 13 23 22 28 45 38 12 ~ 17.32 45.38 30.00
10 18 17 16 ~ 37 20 28 16 36 15 11 17 23 25 30 42 28 11 27 27 36 41 47 12 13 21 24 16 19 21 14 23.55 47.42 30.00
11 14 20 20 22 24 36 41 63 ~ 54 33 52 33 19 33 26 21 38 36 24 16 25 34 52 44 66 60 40 15 ~ ~ 34.43 65.63 28.00
12 ~ 33 30 43 27 17 23 52 120 140 61 64 17 41 52 36 97 96 26 24 43 43 31 49 19 16 17 56 28 15 10 44.23 140.50 30.00

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. 51 28 10 1 0 0 0 0 90 39 11 1 0 0 0 0 113
REL. 56.6 31.1 11.1 1.1 0.0 0.0 0.0 0.0 100.0 43.3 12.2 1.1 0.0 0.0 0.0 0.06.2
ID 56 31 11 2 0 0 0 0 101
ABS. 81 3 0 0 0 0 0 0 84 3 0 0 0 0 0 0 62
REL. 96.4 3.5 0.0 0.0 0.0 0.0 0.0 0.0 100.0 3.6 0.0 0.0 0.0 0.0 0.0 0.0 1.4
ID 96 3 0 0 0 0 0 0 100
ABS. 88 2 0 0 0 0 0 0 90 2 0 0 0 0 0 0 45
REL. 97.7 2.2 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 28.9
ID 97 2 0 0 0 0 0 0 100
ABS. 54 30 2 2 0 0 0 0 88 34 4 2 0 0 0 0 140
REL 61.3 34.0 2.2 2.2 0.0 0.0 0.0 0.0100.0 38.6 4.5 2.3 0.0 0.0 0.0 0.010.12
ID 61 34 2 4 0 0 0 0 102
Year
ABS. 274 63 12 3 0 0 0 0 352 78 15 3 0 0 0 0 140
REL. 77.8 17.8 3.4 0.8 0.0 0.0 0.0 0.0100.0 22.2 4.3 0.9 0.0 0.0 0.0 0.010.12
ID 77 17 3 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