Detailed overview of ambient air pollution valuis from individual stations

Year: 2001
Pollutant:NOx-nitrogen oxides(oxides of nitrogen)
Station:1194 - Plzen-Roudna
Code:CZPMHSPLR
Institution:Public Health Service
Region:Plzensky
District:Plzen-mesto
IHd: 100
Measure method:chemiluminescence
Unit:ug/m^3

Average daily concentrations

Day/
Month

12345678910111213141516171819202122232425262728293031XMaxN
1 24 37 64 ~ 91 21 32 49 40 71 33 101 28 46 44 42 22 27 29 24 29 29 37 44 69 72 27 46 110 80 36 46.84 110.41 30.00
2 37 35 40 36 30 48 77 41 48 31 42 114 44 46 106 113 32 13 19 18 26 16 19 17 24 38 34 28 ~ ~ ~ 41.92 114.48 28.00
3 56 28 25 25 21 25 33 29 48 29 17 26 21 19 37 48 29 19 13 18 24 29 39 30 18 15 15 19 20 31 36 27.23 56.30 31.00
4 36 33 46 23 29 39 ~ 20 32 40 21 13 11 13 15 16 30 30 24 18 14 20 26 32 21 31 43 25 13 26 ~ 25.56 45.72 29.00
5 ~ ~ ~ ~ 16 12 18 19 ~ ~ 24 ~ 15 20 21 23 25 20 20 20 16 14 15 19 21 20 19 20 17 16 18 18.61 25.28 24.00
6 20 20 10 17 22 36 28 19 14 15 25 26 24 35 30 17 19 16 17 27 29 22 16 18 24 20 32 23 31 20 ~ 22.39 35.68 30.00
7 14 17 17 16 15 12 15 18 25 26 29 22 25 18 14 22 25 32 38 20 16 21 ~ 19 24 28 26 18 24 33 31 21.93 37.88 30.00
8 11 13 22 17 18 29 28 36 29 24 18 35 44 28 ~ 26 17 14 25 30 21 31 18 25 27 27 25 18 17 19 ~ 23.88 44.26 29.00
9 21 20 28 30 20 25 20 15 11 17 20 31 36 40 30 18 32 32 22 43 ~ 29 16 26 44 41 57 31 24 34 ~ 28.02 57.02 29.00
10 51 47 54 38 49 36 38 56 48 47 38 78 ~ ~ 34 43 34 32 51 18 29 33 36 44 46 55 44 32 28 30 44 41.77 78.16 29.00
11 16 29 58 38 53 40 36 23 31 31 50 55 48 63 90 71 44 25 55 45 55 24 22 32 39 58 40 34 33 41 ~ 42.58 90.14 30.00
12 19 16 18 59 46 30 24 16 33 71 87 36 26 39 99 32 56 38 47 33 ~ ~ ~ ~ ~ ~ 22 16 19 13 21 36.61 99.48 25.00

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. 49 29 6 5 0 0 0 0 89 40 11 5 0 0 0 0 114
REL. 55.0 32.5 6.7 5.6 0.0 0.0 0.0 0.0 100.0 44.9 12.4 5.6 0.0 0.0 0.0 0.012.2
ID 55 32 6 11 0 0 0 0 105
ABS. 75 8 0 0 0 0 0 0 83 8 0 0 0 0 0 0 46
REL. 90.3 9.6 0.0 0.0 0.0 0.0 0.0 0.0 100.0 9.6 0.0 0.0 0.0 0.0 0.0 0.0 3.4
ID 90 9 0 0 0 0 0 0 100
ABS. 76 12 0 0 0 0 0 0 88 12 0 0 0 0 0 0 57
REL. 86.3 13.6 0.0 0.0 0.0 0.0 0.0 0.0100.0 13.6 0.0 0.0 0.0 0.0 0.0 0.0 27.9
ID 86 13 0 0 0 0 0 0 100
ABS. 30 48 6 0 0 0 0 0 84 54 6 0 0 0 0 0 99
REL 35.7 57.1 7.1 0.0 0.0 0.0 0.0 0.0100.0 64.3 7.1 0.0 0.0 0.0 0.0 0.015.12
ID 35 57 7 0 0 0 0 0 100
Year
ABS. 230 97 12 5 0 0 0 0 344 114 17 5 0 0 0 0 114
REL. 66.8 28.1 3.4 1.4 0.0 0.0 0.0 0.0100.0 33.1 4.9 1.5 0.0 0.0 0.0 0.0 12.2
ID 66 28 3 2 0 0 0 0 101

Note:

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