Detailed overview of ambient air pollution valuis from individual stations

Year: 1998
Pollutant:NOx-nitrogen oxides(oxides of nitrogen)
Station:1104 - Ceske Budejovice
Code:CZCBCMCEB
Institution:CHMI
Region:Jihocesky
District:Ceske Budejovice
IHd: 100
Measure method:chemiluminescence
Unit:ug/m^3

Average daily concentrations

Day/
Month

12345678910111213141516171819202122232425262728293031XMaxN
1 23 35 9 10 12 14 25 27 19 58 71 41 42 90 105 51 39 22 21 30 20 34 26 26 29 83 63 65 107 70 40 42.20 107.12 31.00
2 34 105 81 60 185 298 79 65 139 207 185 134 72 132 72 77 40 111 74 45 54 103 71 75 77 38 21 8.94 ~ ~ ~ 94.43 298.25 28.00
3 8.81 12 15 9 9 10 6.20 6.84 23 28 21 31 16 10 20 19 22 20 13 14 11 21 23 20 42 34 37 36 38 36 66 21.85 65.56 31.00
4 56 26 19 12 19 22 13 18 24 17 15 9 26 30 26 38 29 13 20 30 47 27 23 32 10 8.97 14 24 16 15 ~ 22.61 56.25 30.00
5 11 7.21 20 12 17 27 24 16 13 22 ~ ~ 18 14 14 10 12 18 42 27 17 14 10 11 19 26 25 ~ ~ ~ ~ 17.82 41.95 25.00
6 ~ ~ 37 42 29 24 17 30 32 13 15 14 13 22 12 10 19 31 20 21 18 14 19 21 16 19 14 15 22 22 ~ 20.81 41.74 28.00
7 14 24 19 10 11 18 12 10 ~ 17 8.72 10 10 21 24 18 17 10 18 18 12 16 16 24 12 17 14 18 20 16 21 15.93 24.48 30.00
8 11 10 23 15 22 24 24 16 14 18 27 19 17 24 20 23 31 21 26 29 11 8.24 11 12 30 17 19 14 15 23 35 19.61 34.73 31.00
9 38 18 23 13 13 27 22 32 20 18 19 13 21 12 12 13 17 16 23 27 27 27 43 26 32 28 53 49 47 29 ~ 25.25 52.66 30.00
10 24 29 24 15 31 39 38 44 38 15 15 ~ 26 40 76 108 22 38 48 57 42 41 33 13 11 18 12 8.91 12 18 10 31.53 107.56 30.00
11 9 32 22 27 19 22 67 ~ 67 96 45 67 79 28 37 37 16 22 37 24 19 21 35 40 34 52 54 34 25 35 ~ 38.04 95.71 29.00
12 27 31 34 35 21 9 18 21 94 127 47 78 10 92 324 47 250 114 27 59 20 86 57 31 30 17 22 33 80 23 18 60.74 323.91 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. 41 24 13 8 2 2 0 0 90 49 25 12 4 2 0 0 298
REL. 45.5 26.6 14.4 8.8 2.2 2.2 0.0 0.0 100.0 54.4 27.8 13.3 4.4 2.2 0.0 0.06.2
ID 45 26 14 17 11 55 0 0 171
ABS. 77 6 0 0 0 0 0 0 83 6 0 0 0 0 0 0 56
REL. 92.7 7.2 0.0 0.0 0.0 0.0 0.0 0.0 100.0 7.2 0.0 0.0 0.0 0.0 0.0 0.0 1.4
ID 92 7 0 0 0 0 0 0 100
ABS. 85 6 0 0 0 0 0 0 91 6 0 0 0 0 0 0 53
REL. 93.4 6.5 0.0 0.0 0.0 0.0 0.0 0.0100.0 6.6 0.0 0.0 0.0 0.0 0.0 0.0 27.9
ID 93 6 0 0 0 0 0 0 100
ABS. 46 29 10 3 0 1 1 0 90 44 15 5 2 2 1 0 324
REL 51.1 32.2 11.1 3.3 0.0 1.1 1.1 0.0100.0 48.9 16.7 5.6 2.2 2.2 1.1 0.015.12
ID 51 32 11 6 0 27 138 0 267
Year
ABS. 249 65 23 11 2 3 1 0 354 105 40 17 6 4 1 0 324
REL. 70.3 18.3 6.4 3.1 0.5 0.8 0.2 0.0100.0 29.7 11.3 4.8 1.7 1.1 0.3 0.015.12
ID 70 18 6 6 2 21 35 0 160

Note:

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