Detailed overview of ambient air pollution valuis from individual stations

Year: 2001
Pollutant:NOx-nitrogen oxides(oxides of nitrogen)
Station:1323 - Plzen-Bory
Code:CZPMPZPLB
Institution:Plzen City
Region:Plzensky
District:Plzen-mesto
IHd: 100
Measure method:chemiluminescence
Unit:ug/m^3

Average daily concentrations

Day/
Month

12345678910111213141516171819202122232425262728293031XMaxN
1 52 56 94 99 162 22 28 49 37 159 77 109 56 69 82 71 26 48 39 39 28 27 40 60 72 84 29 55 165 119 51 67.99 165.35 31.00
2 30 26 46 24 10 66 104 62 39 47 38 81 79 65 118 88 49 15 25 24 28 18 25 30 30 44 59 55 ~ ~ ~ 47.28 118.08 28.00
3 39 32 37 14 31 37 61 54 30 23 19 30 14 18 57 64 38 16 16 26 67 68 48 30 13 34 39 40 32 43 32 35.53 68.34 31.00
4 43 73 53 32 22 21 15 26 37 40 34 18 15 11 9 15 37 19 21 38 25 19 25 41 22 23 24 16 36 46 ~ 28.55 72.83 30.00
5 33 34 33 26 28 24 33 35 39 36 33 26 ~ ~ ~ 17 17 16 17 33 28 29 42 39 31 15 ~ ~ ~ 24 21 28.48 42.44 25.00
6 17 8.98 8.12 15 29 27 16 16 15 15 22 30 34 25 23 8.51 8.98 17 18 30 20 17 12 17 38 35 27 16 17 10 ~ 19.75 38.06 30.00
7 13 22 23 21 15 10 8.90 8.19 17 18 17 13 17 13 16 19 21 20 37 25 13 25 31 29 26 28 36 22 20 22 21 20.23 37.01 31.00
8 31 25 13 8.48 12 11 24 20 ~ ~ ~ ~ 20 30 28 25 24 ~ ~ ~ ~ ~ ~ ~ ~ ~ 12 12 35 22 34 21.46 35.33 18.00
9 18 17 21 22 23 23 20 13 11 17 18 23 15 18 13 12 36 54 45 27 18 27 33 46 42 42 40 34 45 38 ~ 26.99 53.52 30.00
10 26 33 31 26 58 31 37 63 34 29 33 48 47 69 75 71 68 65 88 21 15 21 64 61 33 32 20 20 19 28 31 41.83 88.29 31.00
11 15 23 36 20 42 23 14 11 31 48 51 37 76 93 87 59 69 21 34 ~ 38 19 24 32 30 60 87 28 31 62 ~ 41.43 92.94 29.00
12 14 29 36 65 31 42 62 35 62 ~ 87 46 41 42 68 35 36 29 37 35 16 16 19 13 9 ~ ~ ~ 32 15 18 35.89 87.25 27.00

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. 34 36 13 4 3 0 0 0 90 56 20 7 3 0 0 0 165
REL. 37.7 40.0 14.4 4.4 3.3 0.0 0.0 0.0 100.0 62.2 22.2 7.8 3.3 0.0 0.0 0.029.1
ID 37 40 14 8 16 0 0 0 117
ABS. 64 20 1 0 0 0 0 0 85 21 1 0 0 0 0 0 73
REL. 75.2 23.5 1.1 0.0 0.0 0.0 0.0 0.0 100.0 24.7 1.2 0.0 0.0 0.0 0.0 0.0 2.4
ID 75 23 1 0 0 0 0 0 100
ABS. 65 14 0 0 0 0 0 0 79 14 0 0 0 0 0 0 54
REL. 82.2 17.7 0.0 0.0 0.0 0.0 0.0 0.0100.0 17.7 0.0 0.0 0.0 0.0 0.0 0.0 18.9
ID 82 17 0 0 0 0 0 0 100
ABS. 43 32 12 0 0 0 0 0 87 44 12 0 0 0 0 0 93
REL 49.4 36.7 13.7 0.0 0.0 0.0 0.0 0.0100.0 50.6 13.8 0.0 0.0 0.0 0.0 0.014.11
ID 49 36 13 0 0 0 0 0 100
Year
ABS. 206 102 26 4 3 0 0 0 341 135 33 7 3 0 0 0 165
REL. 60.4 29.9 7.6 1.1 0.8 0.0 0.0 0.0100.0 39.6 9.7 2.1 0.9 0.0 0.0 0.0 29.1
ID 60 29 7 2 4 0 0 0 104

Note:

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