Detailed overview of ambient air pollution valuis from individual stations

Year: 1998
Pollutant:NOx-nitrogen oxides(oxides of nitrogen)
Station:1193 - Ces. Budejovice-Tresn.
Code:CZCBHSCBT
Institution:Public Health Service
Region:Jihocesky
District:Ceske Budejovice
IHd: 100
Measure method:chemiluminescence
Unit:ug/m^3

Average daily concentrations

Day/
Month

12345678910111213141516171819202122232425262728293031XMaxN
1 21 26 13 13 14 23 20 20 22 34 51 23 30 46 62 30 22 16 17 31 ~ 45 25 31 24 98 72 55 71 73 39 35.54 97.83 30.00
2 35 91 50 52 92 148 66 32 49 122 69 37 50 49 25 26 29 40 38 31 34 56 56 60 58 36 26 18 ~ ~ ~ 52.76 147.95 28.00
3 15 18 18 15 21 17 14 13 20 25 14 28 25 21 18 26 32 34 25 22 18 16 20 27 33 30 41 30 26 30 39 23.62 41.39 31.00
4 45 31 20 16 17 20 16 19 25 16 14 21 20 30 18 40 27 24 21 24 31 30 19 30 19 14 15 24 16 15 ~ 22.52 44.53 30.00
5 14 13 20 20 21 24 23 17 16 18 20 23 25 16 18 13 15 24 35 27 19 16 15 15 23 22 18 14 14 16 14 18.90 34.63 31.00
6 19 14 22 23 17 18 15 21 20 14 20 20 12 12 14 13 17 20 19 18 16 21 18 18 14 20 15 15 18 21 ~ 17.50 22.85 30.00
7 17 19 19 17 16 17 17 17 21 17 12 12 11 24 18 19 17 13 17 18 16 19 18 24 18 17 16 20 19 16 16 17.27 23.83 31.00
8 13 14 21 23 23 24 22 19 18 17 21 22 24 27 21 25 32 26 29 27 19 18 14 16 22 22 21 23 17 18 29 21.53 32.36 31.00
9 23 18 18 16 13 17 16 23 14 16 21 19 18 ~ 23 21 22 27 28 32 33 32 51 32 32 26 34 35 42 27 ~ 25.16 50.72 29.00
10 27 31 29 19 29 35 37 48 32 20 19 23 28 26 31 54 22 28 30 37 32 31 38 23 19 26 24 17 21 21 16 28.23 53.69 31.00
11 15 23 21 24 28 28 45 36 32 42 30 38 44 27 30 45 32 33 47 35 21 22 29 63 39 54 45 40 30 37 ~ 34.51 63.11 30.00
12 28 32 35 40 31 19 31 31 67 100 43 59 26 38 80 39 54 48 24 35 32 54 44 35 32 18 19 34 100 27 19 41.18 99.80 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. 53 27 7 2 0 0 0 0 89 36 9 2 0 0 0 0 148
REL. 59.5 30.3 7.8 2.2 0.0 0.0 0.0 0.0 100.0 40.4 10.1 2.2 0.0 0.0 0.0 0.06.2
ID 59 30 7 4 0 0 0 0 102
ABS. 88 3 0 0 0 0 0 0 91 3 0 0 0 0 0 0 45
REL. 96.7 3.2 0.0 0.0 0.0 0.0 0.0 0.0 100.0 3.3 0.0 0.0 0.0 0.0 0.0 0.0 1.4
ID 96 3 0 0 0 0 0 0 100
ABS. 87 4 0 0 0 0 0 0 91 4 0 0 0 0 0 0 51
REL. 95.6 4.3 0.0 0.0 0.0 0.0 0.0 0.0100.0 4.4 0.0 0.0 0.0 0.0 0.0 0.0 23.9
ID 95 4 0 0 0 0 0 0 100
ABS. 55 33 4 0 0 0 0 0 92 37 4 0 0 0 0 0 100
REL 59.7 35.8 4.3 0.0 0.0 0.0 0.0 0.0100.0 40.2 4.3 0.0 0.0 0.0 0.0 0.010.12
ID 59 35 4 0 0 0 0 0 100
Year
ABS. 283 67 11 2 0 0 0 0 363 80 13 2 0 0 0 0 148
REL. 77.9 18.4 3.0 0.5 0.0 0.0 0.0 0.0100.0 22.0 3.6 0.6 0.0 0.0 0.0 0.0 6.2
ID 77 18 3 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