Detailed overview of ambient air pollution valuis from individual stations

Year: 2000
Pollutant:NOx-nitrogen oxides(oxides of nitrogen)
Station:1194 - Plzen-Roudna
Code:CZPMHSPLR
Institution:Public Health Service
Region:Zapadocesky
District:Plzen-mesto
IHd: 100
Measure method:chemiluminescence
Unit:ug/m^3

Average daily concentrations

Day/
Month

12345678910111213141516171819202122232425262728293031XMaxN
1 ~ ~ 36 36 55 62 58 53 44 31 40 29 26 47 53 29 34 25 26 33 25 36 24 54 68 51 58 50 23 15 16 39.27 67.66 29.00
2 41 ~ 27 32 29 45 35 19 16 34 33 26 20 31 32 25 27 38 24 20 49 76 56 43 25 37 ~ 50 30 ~ ~ 34.09 76.49 27.00
3 19 21 21 10 14 32 24 19 15 26 13 16 43 36 15 14 18 22 16 27 33 48 46 38 36 19 19 26 19 34 35 25.00 47.75 31.00
4 28 19 22 28 28 18 21 15 14 19 37 35 27 20 18 16 23 29 50 37 37 19 15 15 21 22 17 17 14 14 ~ 23.12 50.07 30.00
5 19 15 16 23 17 15 16 19 24 31 18 12 13 16 26 31 33 24 21 15 20 18 23 34 26 14 14 13 19 15 ~ 20.01 33.97 30.00
6 41 32 18 18 28 ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ 44 35 38 31 28 21 20 22 26 30 ~ 28.78 44.34 15.00
7 21 19 23 26 16 16 22 18 19 25 31 ~ 23 28 18 21 28 28 23 22 25 21 21 32 29 32 26 23 18 22 24 23.41 32.06 30.00
8 38 29 23 22 18 ~ 23 35 29 39 28 22 26 35 38 29 30 32 27 27 20 21 21 26 23 17 20 34 35 30 27 27.43 38.84 30.00
9 34 17 18 23 34 32 26 36 29 26 40 42 37 26 22 20 23 31 22 23 25 32 16 21 33 33 64 24 20 19 ~ 28.34 64.13 30.00
10 20 32 36 34 28 31 20 24 40 34 28 32 66 32 19 51 46 40 57 23 21 26 46 63 48 31 32 39 26 51 48 36.27 66.12 31.00
11 46 50 33 28 29 28 84 89 87 48 46 33 44 61 62 49 35 41 57 71 52 112 34 47 34 20 57 118 59 50 ~ 53.41 117.76 30.00
12 36 49 47 75 41 25 29 53 131 47 50 46 39 33 18 14 32 54 26 38 26 31 54 59 37 37 29 42 72 29 28 42.80 131.22 31.00

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. 50 35 2 0 0 0 0 0 87 37 2 0 0 0 0 0 76
REL. 57.4 40.2 2.2 0.0 0.0 0.0 0.0 0.0 100.0 42.5 2.3 0.0 0.0 0.0 0.0 0.022.2
ID 57 40 2 0 0 0 0 0 100
ABS. 65 10 0 0 0 0 0 0 75 10 0 0 0 0 0 0 50
REL. 86.6 13.3 0.0 0.0 0.0 0.0 0.0 0.0 100.0 13.3 0.0 0.0 0.0 0.0 0.0 0.0 19.4
ID 86 13 0 0 0 0 0 0 100
ABS. 75 15 0 0 0 0 0 0 90 15 0 0 0 0 0 0 64
REL. 83.3 16.6 0.0 0.0 0.0 0.0 0.0 0.0100.0 16.7 0.0 0.0 0.0 0.0 0.0 0.0 27.9
ID 83 16 0 0 0 0 0 0 100
ABS. 34 49 6 3 0 0 0 0 92 58 9 3 0 0 0 0 131
REL 36.9 53.2 6.5 3.2 0.0 0.0 0.0 0.0100.0 63.0 9.8 3.3 0.0 0.0 0.0 0.0 9.12
ID 36 53 6 6 0 0 0 0 103
Year
ABS. 224 109 8 3 0 0 0 0 344 120 11 3 0 0 0 0 131
REL. 65.1 31.6 2.3 0.8 0.0 0.0 0.0 0.0100.0 34.9 3.2 0.9 0.0 0.0 0.0 0.0 9.12
ID 65 31 2 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