Detailed overview of ambient air pollution valuis from individual stations

Year: 1999
Pollutant:NOx-nitrogen oxides(oxides of nitrogen)
Station:1322 - Plzen-Slovany
Code:CZPMPZPSL
Institution:Mun. Authority of the town Plzen
Region:Zapadocesky
District:Plzen-mesto
IHd: 100
Measure method:chemiluminescence
Unit:ug/m^3

Average daily concentrations

Day/
Month

12345678910111213141516171819202122232425262728293031XMaxN
1 17 22 34 27 73 146 51 38 40 21 38 41 42 29 27 63 69 55 61 48 45 106 39 43 29 41 33 33 20 38 39 45.47 145.54 31.00
2 44 74 65 34 14 12 13 37 108 112 92 46 41 48 68 44 36 53 48 63 24 35 40 49 45 61 55 36 ~ ~ ~ 50.04 111.99 28.00
3 25 24 42 69 43 44 56 52 47 63 70 ~ ~ ~ 43 26 39 66 52 21 21 26 31 49 93 71 35 26 47 59 69 46.76 92.79 28.00
4 66 42 32 18 37 35 33 42 38 24 26 21 24 35 38 36 27 37 33 55 68 45 47 33 37 39 33 48 45 42 ~ 37.86 67.57 30.00
5 28 33 38 25 26 25 24 30 45 43 33 24 38 31 17 31 19 19 25 25 27 19 23 33 26 28 24 21 16 17 26 27.16 45.45 31.00
6 21 21 23 21 15 18 27 35 27 22 41 21 20 24 26 25 27 30 20 18 36 25 42 41 29 18 19 32 28 26 ~ 25.91 42.39 30.00
7 30 31 20 14 11 15 24 37 16 10 16 27 20 ~ 30 ~ ~ ~ ~ ~ 31 32 36 21 34 26 20 23 31 32 22 24.20 36.58 25.00
8 31 34 40 38 48 33 26 20 29 27 25 33 42 26 19 34 30 26 36 28 15 27 36 64 33 32 33 24 25 32 45 31.91 63.68 31.00
9 39 34 28 13 22 31 33 43 51 49 27 47 59 53 56 53 37 17 14 22 35 31 40 52 49 15 50 57 26 32 ~ 37.20 59.45 30.00
10 22 24 23 34 51 48 47 40 22 18 43 65 82 61 57 52 47 39 40 39 39 34 44 30 53 46 41 58 81 56 63 45.08 81.92 31.00
11 140 120 69 56 94 44 27 66 54 51 55 48 34 29 56 52 53 44 71 45 62 66 114 136 72 124 61 88 83 84 ~ 69.99 140.24 30.00
12 42 30 24 18 19 30 29 30 67 55 36 10 ~ 37 65 46 36 29 38 63 94 84 117 31 22 12 27 38 47 33 ~ 41.79 116.76 29.00

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. 20 53 10 4 0 0 0 0 87 67 14 4 0 0 0 0 146
REL. 22.9 60.9 11.4 4.5 0.0 0.0 0.0 0.0 100.0 77.0 16.1 4.6 0.0 0.0 0.0 0.06.1
ID 22 60 11 9 0 0 0 0 104
ABS. 62 28 1 0 0 0 0 0 91 29 1 0 0 0 0 0 68
REL. 68.1 30.7 1.0 0.0 0.0 0.0 0.0 0.0 100.0 31.9 1.1 0.0 0.0 0.0 0.0 0.0 21.4
ID 68 30 1 0 0 0 0 0 100
ABS. 55 31 0 0 0 0 0 0 86 31 0 0 0 0 0 0 64
REL. 63.9 36.0 0.0 0.0 0.0 0.0 0.0 0.0100.0 36.0 0.0 0.0 0.0 0.0 0.0 0.0 24.8
ID 63 36 0 0 0 0 0 0 100
ABS. 22 50 12 6 0 0 0 0 90 68 18 6 0 0 0 0 140
REL 24.4 55.5 13.3 6.6 0.0 0.0 0.0 0.0100.0 75.6 20.0 6.7 0.0 0.0 0.0 0.0 1.11
ID 24 55 13 13 0 0 0 0 106
Year
ABS. 159 162 23 10 0 0 0 0 354 195 33 10 0 0 0 0 146
REL. 44.9 45.7 6.4 2.8 0.0 0.0 0.0 0.0100.0 55.1 9.3 2.8 0.0 0.0 0.0 0.0 6.1
ID 44 45 6 5 0 0 0 0 102

Note:

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