Detailed overview of ambient air pollution valuis from individual stations

Year: 2002
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 29 45 90 132 120 81 151 109 46 66 81 69 ~ 88 64 55 68 67 42 15 43 49 120 39 39 16 14 20 33 89 78 65.21 151.20 30.00
2 67 145 101 95 230 134 66 36 13 8.03 15 16 66 43 46 41 85 79 30 ~ 42 33 17 21 48 21 30 33 ~ ~ ~ 57.79 229.85 27.00
3 66 37 33 83 95 72 32 68 36 38 134 119 100 35 46 44 30 52 32 49 44 41 19 18 26 32 52 67 69 52 43 53.70 133.71 31.00
4 63 41 24 32 26 20 21 33 31 32 33 36 35 37 55 58 67 67 69 40 37 58 53 32 40 30 16 15 23 40 ~ 38.86 69.40 30.00
5 35 27 25 27 35 65 22 12 17 29 20 25 34 34 43 39 31 16 30 36 22 21 26 33 22 26 37 45 36 40 38 30.53 65.14 31.00
6 18 26 35 30 22 23 28 27 21 46 34 30 29 34 23 30 35 ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ 25 18 23 ~ 27.76 45.92 20.00
7 37 32 21 23 16 15 27 24 25 26 36 23 14 13 15 23 34 28 31 24 21 30 31 28 32 32 22 24 28 31 36 25.91 37.02 31.00
8 27 25 20 30 32 28 45 39 36 18 22 28 26 42 35 43 24 28 32 31 39 40 44 31 32 27 32 45 44 51 26 32.98 51.33 31.00
9 25 33 35 60 56 43 35 26 38 43 68 45 38 32 34 52 52 52 64 57 33 28 21 23 49 62 38 35 46 97 ~ 43.93 97.14 30.00
10 107 85 61 49 20 27 51 42 21 31 29 22 36 49 62 80 34 40 25 51 153 95 31 69 62 14 10 29 63 93 83 52.37 153.21 31.00
11 80 24 26 65 33 46 64 45 22 34 71 123 275 72 154 77 74 62 79 74 51 63 68 40 73 111 84 50 66 37 ~ 71.43 274.94 30.00
12 75 93 66 33 ~ ~ ~ ~ ~ ~ ~ ~ 82 51 51 256 155 62 109 129 146 80 49 24 16 20 40 42 19 18 13 70.87 256.12 23.00

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. 25 33 18 10 1 1 0 0 88 63 30 12 2 1 0 0 230
REL. 28.4 37.5 20.4 11.3 1.1 1.1 0.0 0.0 100.0 71.6 34.1 13.6 2.3 1.1 0.0 0.05.2
ID 28 37 20 22 5 28 0 0 143
ABS. 45 33 3 0 0 0 0 0 81 36 3 0 0 0 0 0 69
REL. 55.5 40.7 3.7 0.0 0.0 0.0 0.0 0.0 100.0 44.4 3.7 0.0 0.0 0.0 0.0 0.0 19.4
ID 55 40 3 0 0 0 0 0 100
ABS. 53 37 2 0 0 0 0 0 92 39 2 0 0 0 0 0 97
REL. 57.6 40.2 2.1 0.0 0.0 0.0 0.0 0.0100.0 42.4 2.2 0.0 0.0 0.0 0.0 0.0 30.9
ID 57 40 2 0 0 0 0 0 100
ABS. 22 31 20 6 3 2 0 0 84 62 31 11 5 2 0 0 275
REL 26.1 36.9 23.8 7.1 3.5 2.3 0.0 0.0100.0 73.8 36.9 13.1 6.0 2.4 0.0 0.013.11
ID 26 36 23 14 17 59 0 0 178
Year
ABS. 145 134 43 16 4 3 0 0 345 200 66 23 7 3 0 0 275
REL. 42.0 38.8 12.4 4.6 1.1 0.8 0.0 0.0100.0 58.0 19.1 6.7 2.0 0.9 0.0 0.013.11
ID 42 38 12 9 5 21 0 0 130

Note:

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