Detailed overview of ambient air pollution valuis from individual stations

Year: 1998
Pollutant:NOx-nitrogen oxides(oxides of nitrogen)
Station:1322 - Plzen-Slovany
Code:CZPMPZPSL
Institution:Plzeň Municipal Authority
Region:Zapadocesky
District:Plzen-mesto
IHd: 100
Measure method:chemiluminescence
Unit:ug/m^3

Average daily concentrations

Day/
Month

12345678910111213141516171819202122232425262728293031XMaxN
1 100 76 13 14 15 23 26 25 42 69 74 91 66 97 87 47 24 40 32 49 31 44 44 37 41 83 93 80 84 57 41 53.00 99.92 31.00
2 44 71 67 130 86 100 61 38 60 84 73 45 43 35 22 37 33 51 59 97 ~ ~ 49 40 68 ~ ~ ~ ~ ~ ~ 60.61 129.98 23.00
3 ~ 24 24 20 19 24 11 16 36 46 27 48 40 29 37 60 65 54 36 49 26 20 33 57 80 96 69 47 43 80 54 42.34 96.47 30.00
4 57 30 40 11 23 36 37 35 53 25 18 15 29 38 41 48 38 ~ ~ 34 54 40 45 34 15 9 18 38 25 17 ~ 32.20 57.29 28.00
5 11 14 33 24 29 28 37 42 26 30 35 43 21 23 26 14 22 23 33 35 35 28 20 26 30 38 40 27 21 13 11 27.04 42.83 31.00
6 ~ 29 31 32 21 ~ ~ ~ 24 24 38 42 22 16 24 21 27 33 33 18 21 33 33 32 30 25 13 19 27 25 ~ 26.58 41.58 26.00
7 25 27 24 18 16 20 31 29 29 28 14 20 20 26 27 26 20 13 31 44 ~ ~ ~ 17 10 13 23 ~ 26 28 35 23.69 43.90 27.00
8 22 34 53 43 44 40 33 24 22 ~ 28 29 33 31 19 25 33 46 30 29 19 12 13 23 32 26 27 27 21 26 47 29.64 52.51 30.00
9 50 36 26 18 15 19 35 61 39 28 30 15 21 15 20 21 30 44 22 20 28 36 37 44 46 32 44 53 59 31 ~ 32.47 60.63 30.00
10 32 34 32 19 39 35 53 47 51 16 15 27 38 31 48 60 28 28 51 42 50 53 48 18 13 33 23 12 29 23 16 33.70 60.41 31.00
11 15 37 37 28 36 42 60 64 55 67 44 67 50 23 34 56 39 52 59 48 33 42 70 74 59 82 79 65 35 62 ~ 50.47 82.23 30.00
12 32 56 60 63 28 20 46 62 130 ~ 140 98 36 79 74 57 96 158 31 47 78 76 95 82 27 19 26 98 70 54 24 65.42 157.95 30.00

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. 23 37 22 2 0 0 0 0 84 61 24 2 0 0 0 0 130
REL. 27.3 44.0 26.1 2.3 0.0 0.0 0.0 0.0 100.0 72.6 28.6 2.4 0.0 0.0 0.0 0.04.2
ID 27 44 26 4 0 0 0 0 102
ABS. 59 26 0 0 0 0 0 0 85 26 0 0 0 0 0 0 57
REL. 69.4 30.5 0.0 0.0 0.0 0.0 0.0 0.0 100.0 30.6 0.0 0.0 0.0 0.0 0.0 0.0 1.4
ID 69 30 0 0 0 0 0 0 100
ABS. 64 23 0 0 0 0 0 0 87 23 0 0 0 0 0 0 61
REL. 73.5 26.4 0.0 0.0 0.0 0.0 0.0 0.0100.0 26.4 0.0 0.0 0.0 0.0 0.0 0.0 8.9
ID 73 26 0 0 0 0 0 0 100
ABS. 29 43 16 2 1 0 0 0 91 62 19 3 1 0 0 0 158
REL 31.8 47.2 17.5 2.1 1.0 0.0 0.0 0.0100.0 68.1 20.9 3.3 1.1 0.0 0.0 0.018.12
ID 31 47 17 4 5 0 0 0 106
Year
ABS. 175 129 38 4 1 0 0 0 347 172 43 5 1 0 0 0 158
REL. 50.4 37.1 10.9 1.1 0.2 0.0 0.0 0.0100.0 49.6 12.4 1.4 0.3 0.0 0.0 0.018.12
ID 50 37 10 2 1 0 0 0 102

Note:

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