Detailed overview of ambient air pollution valuis from individual stations

Year: 1998
Pollutant:NOx-nitrogen oxides(oxides of nitrogen)
Station:1324 - Plzen-Lochotin
Code:CZPMPZPLL
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 50 55 16 20 13 24 32 30 63 135 94 75 58 90 75 48 29 44 30 35 21 22 29 29 21 42 64 46 61 36 26 45.59 135.29 31.00
2 23 41 47 88 71 80 62 37 62 90 61 31 30 26 21 21 23 ~ 42 87 93 42 38 41 ~ 32 24 11 ~ ~ ~ 47.10 93.45 26.00
3 12 15 16 12 11 14 8.74 9 15 20 ~ ~ 16 12 21 32 26 26 15 18 12 13 13 23 33 34 41 22 18 39 63 21.05 63.01 29.00
4 37 25 36 12 34 29 19 28 31 17 15 14 31 23 27 27 24 20 17 37 33 24 29 25 28 17 22 37 30 17 ~ 25.54 37.48 30.00
5 18 16 17 16 18 21 37 35 18 15 24 29 19 14 16 13 17 26 33 28 26 17 19 23 25 35 ~ 13 14 16 9 20.87 37.39 30.00
6 18 ~ ~ 23 13 14 12 25 28 18 20 16 15 17 13 13 17 18 21 16 16 14 16 25 26 12 13 13 18 16 ~ 17.39 28.25 28.00
7 14 15 13 12 13 15 19 13 17 14 8.59 16 12 15 17 15 12 8.76 18 29 ~ 21 21 19 15 13 20 17 18 15 19 15.80 29.22 30.00
8 10 10 24 20 16 20 21 21 11 17 35 26 24 20 24 24 48 26 19 28 17 13 17 16 22 13 13 11 12 11 37 20.21 48.35 31.00
9 28 14 19 20 14 20 27 44 42 28 33 17 27 15 19 23 23 31 28 20 20 33 26 30 53 37 77 46 63 27 ~ 30.19 76.61 30.00
10 31 28 31 22 35 32 38 32 42 17 14 17 24 29 41 57 32 18 31 24 32 ~ 35 13 5.89 14 12 10 14 6.91 11 24.97 57.42 30.00
11 5.47 19 18 19 19 19 73 39 38 ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ 64 72 62 24 38 ~ 36.47 72.96 14.00
12 26 41 38 47 20 13 21 30 69 129 68 48 15 35 43 30 67 90 20 20 ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ 43.53 128.61 20.00

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. 49 26 10 1 0 0 0 0 86 37 11 1 0 0 0 0 135
REL. 56.9 30.2 11.6 1.1 0.0 0.0 0.0 0.0 100.0 43.0 12.8 1.2 0.0 0.0 0.0 0.010.1
ID 56 30 11 2 0 0 0 0 101
ABS. 80 8 0 0 0 0 0 0 88 8 0 0 0 0 0 0 37
REL. 90.9 9.0 0.0 0.0 0.0 0.0 0.0 0.0 100.0 9.1 0.0 0.0 0.0 0.0 0.0 0.0 28.4
ID 90 9 0 0 0 0 0 0 100
ABS. 81 9 1 0 0 0 0 0 91 10 1 0 0 0 0 0 77
REL. 89.0 9.8 1.0 0.0 0.0 0.0 0.0 0.0100.0 11.0 1.1 0.0 0.0 0.0 0.0 0.0 27.9
ID 89 9 1 0 0 0 0 0 100
ABS. 40 17 6 1 0 0 0 0 64 24 7 1 0 0 0 0 129
REL 62.5 26.5 9.3 1.5 0.0 0.0 0.0 0.0100.0 37.5 10.9 1.6 0.0 0.0 0.0 0.010.12
ID 62 26 9 3 0 0 0 0 101
Year
ABS. 250 60 17 2 0 0 0 0 329 79 19 2 0 0 0 0 135
REL. 75.9 18.2 5.1 0.6 0.0 0.0 0.0 0.0100.0 24.0 5.8 0.6 0.0 0.0 0.0 0.0 10.1
ID 75 18 5 1 0 0 0 0 100

Note:

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