Detailed overview of ambient air pollution valuis from individual stations

Year: 2000
Pollutant:NOx-nitrogen oxides(oxides of nitrogen)
Station:1105 - Plzen-Doubravka
Code:CZPMCMDOU
Institution:Czech Hydrometeorological Institute
Region:Zapadocesky
District:Plzen-mesto
IHd: 100
Measure method:chemiluminescence
Unit:ug/m^3

Average daily concentrations

Day/
Month

12345678910111213141516171819202122232425262728293031XMaxN
1 25 23 27 29 44 51 50 ~ ~ 16 16 13 13 41 50 25 21 10 11 27 12 23 16 53 61 61 64 51 23 17 15 30.55 64.28 29.00
2 33 28 31 31 32 49 26 19 15 30 23 21 25 25 25 20 22 24 22 15 21 44 50 36 23 31 19 42 16 ~ ~ 27.51 49.72 29.00
3 19 14 21 8.74 18 28 25 23 11 13 12 11 37 26 ~ 12 11 18 17 28 30 56 38 26 25 16 11 19 14 29 31 21.62 56.22 30.00
4 24 12 9 16 16 18 14 8.04 6.69 12 20 22 17 12 12 8.41 17 20 38 22 35 12 7.95 13 17 9 8.01 6.76 6.06 6.18 ~ 14.83 38.00 30.00
5 9 7.98 8.94 16 8.90 6.96 7.29 18 21 24 8.63 6.76 6.29 7.00 10 27 27 19 16 13 15 17 18 21 16 9 10 12 16 11 23 14.07 27.28 31.00
6 26 27 10 12 14 14 19 8.41 7.86 7.89 9 6.91 10 15 12 9 7.89 14 19 26 27 17 15 8.90 13 13 11 17 18 24 ~ 14.65 27.21 30.00
7 12 11 14 14 9 6.93 13 8.20 7.64 11 15 18 15 18 ~ 16 16 19 19 20 14 10 10 18 26 27 12 15 12 13 17 14.57 27.07 30.00
8 23 20 15 16 8.19 17 14 30 21 26 15 12 15 31 29 19 29 19 16 18 15 11 9 19 13 5.97 12 22 37 16 12 18.27 36.89 31.00
9 30 12 15 16 26 27 25 28 21 20 27 36 35 23 14 17 18 18 13 16 20 21 11 8.10 16 19 38 13 11 9 ~ 20.14 38.28 30.00
10 16 27 26 22 24 28 17 18 18 18 20 18 44 22 10 28 42 22 36 12 12 17 32 42 30 30 23 28 27 37 34 25.17 44.26 31.00
11 28 28 23 33 23 13 43 43 60 37 29 20 29 50 57 31 31 23 47 49 46 69 19 40 24 20 43 70 31 41 ~ 36.62 70.31 30.00
12 24 32 33 34 23 14 19 27 109 36 44 53 26 21 24 19 46 49 21 35 20 18 67 52 28 32 23 41 45 36 35 35.12 108.78 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. 70 18 0 0 0 0 0 0 88 18 0 0 0 0 0 0 64
REL. 79.5 20.4 0.0 0.0 0.0 0.0 0.0 0.0 100.0 20.5 0.0 0.0 0.0 0.0 0.0 0.027.1
ID 79 20 0 0 0 0 0 0 100
ABS. 89 2 0 0 0 0 0 0 91 2 0 0 0 0 0 0 38
REL. 97.8 2.1 0.0 0.0 0.0 0.0 0.0 0.0 100.0 2.2 0.0 0.0 0.0 0.0 0.0 0.0 19.4
ID 97 2 0 0 0 0 0 0 100
ABS. 87 4 0 0 0 0 0 0 91 4 0 0 0 0 0 0 38
REL. 95.6 4.3 0.0 0.0 0.0 0.0 0.0 0.0100.0 4.4 0.0 0.0 0.0 0.0 0.0 0.0 27.9
ID 95 4 0 0 0 0 0 0 100
ABS. 58 30 3 1 0 0 0 0 92 34 4 1 0 0 0 0 109
REL 63.0 32.6 3.2 1.0 0.0 0.0 0.0 0.0100.0 37.0 4.3 1.1 0.0 0.0 0.0 0.0 9.12
ID 63 32 3 2 0 0 0 0 101
Year
ABS. 304 54 3 1 0 0 0 0 362 58 4 1 0 0 0 0 109
REL. 83.9 14.9 0.8 0.2 0.0 0.0 0.0 0.0100.0 16.0 1.1 0.3 0.0 0.0 0.0 0.0 9.12
ID 83 14 0 0 0 0 100

Note:

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