Detailed overview of ambient air pollution valuis from individual stations

Year: 1999
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 21 28 40 34 65 172 40 37 29 18 32 35 45 36 30 61 42 54 72 67 58 91 50 49 48 34 32 34 19 28 35 46.38 171.85 31.00
2 56 71 59 27 11 11 15 97 75 ~ 43 20 20 33 61 31 18 32 41 35 21 22 18 25 29 57 57 40 ~ ~ ~ 37.93 96.79 27.00
3 23 26 32 39 29 30 27 48 37 54 26 27 30 29 28 16 23 35 50 13 22 26 24 41 65 75 17 24 27 45 49 33.54 75.41 31.00
4 49 42 44 19 31 36 23 34 32 24 19 22 20 26 24 20 16 22 28 27 51 32 33 23 19 25 22 26 22 27 ~ 27.98 51.29 30.00
5 18 13 17 13 14 15 16 20 23 35 21 17 21 26 10 12 11 10 20 16 18 16 19 30 25 17 16 17 16 17 17 18.00 35.02 31.00
6 15 16 15 16 12 11 18 24 21 14 19 13 13 14 26 16 21 19 21 18 21 16 20 25 18 18 15 26 29 31 ~ 18.72 31.09 30.00
7 31 29 21 13 12 15 15 23 11 10 10 23 27 21 20 22 24 19 26 24 21 18 19 16 17 17 12 ~ 11 13 13 18.38 30.84 30.00
8 15 20 16 19 37 27 24 20 29 24 19 22 24 21 15 24 26 30 25 23 13 14 21 36 21 31 30 18 17 28 33 23.23 36.74 31.00
9 27 32 16 13 15 31 33 39 51 31 15 23 32 31 56 56 35 19 16 22 43 49 58 52 50 36 ~ 60 ~ 38 ~ 34.95 59.53 28.00
10 ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
11 89 75 44 32 63 38 28 37 34 25 33 28 22 20 23 39 44 38 53 44 45 55 65 138 64 90 55 51 49 67 ~ 49.62 138.33 30.00
12 38 29 33 25 25 36 32 33 48 52 42 24 29 34 34 28 39 36 32 40 53 40 62 28 33 29 28 29 41 ~ ~ 35.56 62.46 29.00

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. 44 38 6 0 1 0 0 0 89 45 7 1 1 0 0 0 172
REL. 49.4 42.6 6.7 0.0 1.1 0.0 0.0 0.0 100.0 50.6 7.9 1.1 1.1 0.0 0.0 0.06.1
ID 49 42 6 0 5 0 0 0 104
ABS. 83 8 0 0 0 0 0 0 91 8 0 0 0 0 0 0 51
REL. 91.2 8.7 0.0 0.0 0.0 0.0 0.0 0.0 100.0 8.8 0.0 0.0 0.0 0.0 0.0 0.0 21.4
ID 91 8 0 0 0 0 0 0 100
ABS. 74 15 0 0 0 0 0 0 89 15 0 0 0 0 0 0 60
REL. 83.1 16.8 0.0 0.0 0.0 0.0 0.0 0.0100.0 16.9 0.0 0.0 0.0 0.0 0.0 0.0 28.9
ID 83 16 0 0 0 0 0 0 100
ABS. 23 31 4 1 0 0 0 0 591 36 5 1 0 0 0 0 138
REL 38.9 52.5 6.7 1.6 0.0 0.0 0.0 0.0100.0 61.0 8.5 1.7 0.0 0.0 0.0 0.024.11
ID 38 52 6 3 0 0 0 0 101
Year
ABS. 224 92 10 1 1 0 0 0 328 104 12 2 1 0 0 0 172
REL. 68.2 28.0 3.0 0.3 0.3 0.0 0.0 0.0100.0 31.7 3.7 0.6 0.3 0.0 0.0 0.0 6.1
ID 68 28 3 1 0 0 0 101

Note:

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