Detailed overview of ambient air pollution valuis from individual stations

Year: 1998
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 48 50 16 18 20 19 36 19 27 72 73 78 52 79 90 47 19 34 26 28 19 22 26 28 24 45 70 59 77 53 26 42.01 90.37 31.00
2 24 64 56 113 112 127 64 39 65 103 90 45 41 32 27 38 29 60 55 72 85 44 41 49 70 64 35 16 ~ ~ ~ 59.38 127.23 28.00
3 18 24 31 29 15 27 17 17 20 28 23 27 21 14 20 40 27 36 13 18 8.42 10 11 16 38 26 48 19 18 26 64 24.09 63.59 31.00
4 58 29 36 14 25 37 28 22 26 13 12 10 28 19 20 18 22 17 13 38 33 14 17 25 23 8.03 13 25 22 11 ~ 22.50 58.36 30.00
5 8.20 10 14 ~ 17 ~ 20 22 ~ 9 20 21 15 8.85 10 10 10 19 29 24 17 10 15 19 24 34 29 14 18 11 9 16.71 34.20 28.00
6 16 23 22 21 12 12 11 21 31 18 16 14 7.41 15 12 15 17 15 22 10 17 13 15 22 26 14 13 13 15 15 ~ 16.36 30.93 30.00
7 12 10 10 8.81 8.42 13 17 9 14 14 5.58 16 15 23 29 22 21 15 15 41 25 34 29 21 17 13 28 19 22 23 27 18.52 41.23 31.00
8 13 12 20 26 17 29 31 27 15 18 46 35 27 21 22 26 41 40 22 32 28 13 18 19 23 26 18 17 19 16 39 24.43 46.02 31.00
9 40 20 20 25 16 20 38 44 57 37 35 15 27 31 18 ~ 23 25 18 10 13 16 22 19 35 29 42 48 56 21 ~ 28.26 57.40 29.00
10 26 27 30 17 29 29 40 34 52 19 18 25 34 39 50 69 46 21 38 36 52 54 68 23 14 26 30 16 28 22 23 33.33 68.65 31.00
11 15 39 41 38 32 30 67 69 60 71 33 112 55 32 31 43 29 40 46 35 24 35 45 62 64 77 95 74 27 42 ~ 48.72 111.57 30.00
12 28 43 43 55 31 17 26 38 ~ ~ ~ ~ 20 47 62 41 105 134 36 27 46 51 52 52 31 30 27 79 46 29 24 45.22 133.89 27.00

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. 46 29 11 4 0 0 0 0 90 44 15 4 0 0 0 0 127
REL. 51.1 32.2 12.2 4.4 0.0 0.0 0.0 0.0 100.0 48.9 16.7 4.4 0.0 0.0 0.0 0.06.2
ID 51 32 12 8 0 0 0 0 104
ABS. 83 5 0 0 0 0 0 0 88 5 0 0 0 0 0 0 58
REL. 94.3 5.6 0.0 0.0 0.0 0.0 0.0 0.0 100.0 5.7 0.0 0.0 0.0 0.0 0.0 0.0 1.4
ID 94 5 0 0 0 0 0 0 100
ABS. 74 17 0 0 0 0 0 0 91 17 0 0 0 0 0 0 57
REL. 81.3 18.6 0.0 0.0 0.0 0.0 0.0 0.0100.0 18.7 0.0 0.0 0.0 0.0 0.0 0.0 9.9
ID 81 18 0 0 0 0 0 0 100
ABS. 38 38 9 3 0 0 0 0 88 50 12 3 0 0 0 0 134
REL 43.1 43.1 10.2 3.4 0.0 0.0 0.0 0.0100.0 56.8 13.6 3.4 0.0 0.0 0.0 0.018.12
ID 43 43 10 6 0 0 0 0 103
Year
ABS. 241 89 20 7 0 0 0 0 357 116 27 7 0 0 0 0 134
REL. 67.5 24.9 5.6 1.9 0.0 0.0 0.0 0.0100.0 32.5 7.6 2.0 0.0 0.0 0.0 0.018.12
ID 67 24 5 3 0 0 0 0 101

Note:

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