Detailed overview of ambient air pollution valuis from individual stations

Year: 2001
Pollutant:NOx-nitrogen oxides(oxides of nitrogen)
Station:1322 - Plzen-Slovany
Code:CZPMPZPSL
Institution:Plzen City
Region:Plzensky
District:Plzen-mesto
IHd: 100
Measure method:chemiluminescence
Unit:ug/m^3

Average daily concentrations

Day/
Month

12345678910111213141516171819202122232425262728293031XMaxN
1 45 50 104 89 110 29 38 84 58 148 84 131 60 76 88 78 24 48 31 36 32 33 40 66 82 93 27 75 166 134 63 71.70 166.26 31.00
2 ~ ~ ~ ~ ~ 123 155 67 78 64 64 121 74 77 168 120 ~ ~ 36 33 43 30 37 34 43 64 53 49 ~ ~ ~ 72.93 167.90 21.00
3 62 42 36 21 41 35 59 53 49 18 12 21 22 22 51 75 39 17 20 36 57 65 60 40 22 31 28 32 33 60 47 38.98 74.64 31.00
4 57 76 74 42 35 32 26 38 55 56 51 26 21 18 16 28 55 35 36 28 20 28 45 54 26 34 36 20 27 42 ~ 37.88 76.25 30.00
5 29 21 38 23 17 13 25 25 25 34 27 18 31 ~ 35 29 32 37 27 38 33 39 41 38 24 21 27 41 38 28 32 29.52 41.37 30.00
6 28 14 14 32 46 49 32 30 12 25 37 45 40 40 36 15 17 28 25 34 33 28 18 21 36 37 31 34 34 18 ~ 29.65 48.70 30.00
7 23 28 18 21 12 10 11 15 34 31 30 22 26 17 14 32 28 33 49 43 17 23 31 34 32 31 42 21 23 35 34 26.49 49.13 31.00
8 25 23 22 15 21 23 35 26 29 31 20 25 42 34 27 37 22 18 35 43 40 57 36 35 26 32 39 35 33 25 52 31.10 57.09 31.00
9 29 26 35 42 47 50 40 24 21 35 36 43 35 41 23 24 67 56 30 38 35 44 24 55 63 67 74 41 41 42 ~ 40.99 73.82 30.00
10 39 61 50 50 49 43 49 76 63 62 61 86 80 67 61 87 57 77 114 28 37 53 82 72 59 60 50 42 49 51 55 60.35 113.89 31.00
11 37 56 59 53 80 49 35 26 60 59 67 45 ~ ~ 112 101 70 ~ 66 82 74 37 47 48 43 90 ~ ~ ~ ~ ~ 60.62 111.72 23.00
12 ~ ~ ~ 79 55 66 68 35 76 137 178 ~ ~ 67 151 75 110 80 76 72 40 35 37 36 12 23 26 14 24 20 36 62.64 178.48 26.00

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. 21 37 14 8 3 0 0 0 83 62 25 11 3 0 0 0 168
REL. 25.3 44.5 16.8 9.6 3.6 0.0 0.0 0.0 100.0 74.7 30.1 13.3 3.6 0.0 0.0 0.015.2
ID 25 44 16 19 18 0 0 0 124
ABS. 51 37 2 0 0 0 0 0 90 39 2 0 0 0 0 0 76
REL. 56.6 41.1 2.2 0.0 0.0 0.0 0.0 0.0 100.0 43.3 2.2 0.0 0.0 0.0 0.0 0.0 2.4
ID 56 41 2 0 0 0 0 0 100
ABS. 49 40 3 0 0 0 0 0 92 43 3 0 0 0 0 0 74
REL. 53.2 43.4 3.2 0.0 0.0 0.0 0.0 0.0100.0 46.7 3.3 0.0 0.0 0.0 0.0 0.0 27.9
ID 53 43 3 0 0 0 0 0 100
ABS. 8 43 22 5 2 0 0 0 80 72 29 7 2 0 0 0 178
REL 10.0 53.7 27.5 6.2 2.5 0.0 0.0 0.0100.0 90.0 36.3 8.7 2.5 0.0 0.0 0.011.12
ID 10 53 27 12 12 0 0 0 116
Year
ABS. 129 157 41 13 5 0 0 0 345 216 59 18 5 0 0 0 178
REL. 37.3 45.5 11.8 3.7 1.4 0.0 0.0 0.0100.0 62.6 17.1 5.2 1.4 0.0 0.0 0.011.12
ID 37 45 11 7 7 0 0 0 109

Note:

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