Detailed overview of ambient air pollution valuis from individual stations

Year: 2001
Pollutant:NOx-nitrogen oxides(oxides of nitrogen)
Station:1061 - Ostrava-Fifejdy
Code:CZOSCMFIF
Institution:Czech Hydrometeorological Institute
Region:Moravskoslezsky
District:Ostrava-mesto
IHd: 100
Measure method:chemiluminescence
Unit:ug/m^3

Average daily concentrations

Day/
Month

12345678910111213141516171819202122232425262728293031XMaxN
1 24 17 30 167 28 18 50 33 35 46 63 40 73 133 125 128 113 114 193 49 59 73 45 30 48 33 45 55 77 46 26 64.98 193.36 31.00
2 25 38 54 78 29 23 51 86 28 29 39 22 27 90 62 96 43 14 27 22 22 22 30 55 60 71 89 31 ~ ~ ~ 45.16 95.80 28.00
3 25 45 43 42 30 66 54 70 64 ~ ~ 20 30 26 23 30 35 75 33 29 36 50 47 28 30 28 25 31 45 35 33 38.89 75.42 29.00
4 80 68 65 35 48 30 20 15 24 29 46 25 11 14 11 16 38 24 28 29 17 14 35 55 45 30 32 16 51 34 ~ 32.82 80.38 30.00
5 43 27 56 33 16 12 13 20 46 26 13 17 39 15 18 43 26 15 21 37 15 22 47 39 19 26 13 20 19 24 17 25.70 56.15 31.00
6 17 11 16 12 25 39 19 22 14 16 14 13 39 40 29 17 15 16 11 14 21 18 21 30 33 42 57 20 21 22 ~ 22.81 57.03 30.00
7 20 11 20 27 36 24 12 8.58 12 46 14 38 26 24 15 18 14 21 26 15 7.39 9 14 10 12 18 23 30 30 38 19 20.59 46.21 31.00
8 27 42 24 17 11 42 27 15 35 23 17 24 35 52 52 38 17 30 41 27 13 19 26 51 54 54 23 20 64 63 32 32.77 63.97 31.00
9 19 32 34 20 16 29 22 11 7.88 14 23 18 31 57 25 22 32 77 98 90 42 23 20 31 25 26 34 48 36 25 ~ 33.01 97.54 30.00
10 18 16 36 40 66 48 47 154 76 39 34 90 43 38 110 110 72 51 59 51 28 27 27 36 28 20 14 20 31 22 32 47.83 154.31 31.00
11 28 48 26 18 42 31 20 16 24 85 24 38 36 42 48 46 41 26 34 27 35 25 21 15 21 56 37 36 62 31 ~ 34.63 84.74 30.00
12 21 37 37 34 37 119 61 91 136 77 118 60 60 91 60 22 74 41 28 27 19 31 16 12 10 17 27 14 15 13 12 45.65 136.16 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. 38 32 11 5 2 0 0 0 88 50 18 7 2 0 0 0 193
REL. 43.1 36.3 12.5 5.6 2.2 0.0 0.0 0.0 100.0 56.8 20.5 8.0 2.3 0.0 0.0 0.019.1
ID 43 36 12 11 11 0 0 0 114
ABS. 66 23 2 0 0 0 0 0 91 25 2 0 0 0 0 0 80
REL. 72.5 25.2 2.1 0.0 0.0 0.0 0.0 0.0 100.0 27.5 2.2 0.0 0.0 0.0 0.0 0.0 1.4
ID 72 25 2 0 0 0 0 0 100
ABS. 66 23 3 0 0 0 0 0 92 26 3 0 0 0 0 0 98
REL. 71.7 25.0 3.2 0.0 0.0 0.0 0.0 0.0100.0 28.3 3.3 0.0 0.0 0.0 0.0 0.0 19.9
ID 71 25 3 0 0 0 0 0 100
ABS. 42 36 8 5 1 0 0 0 92 50 14 6 1 0 0 0 154
REL 45.6 39.1 8.6 5.4 1.0 0.0 0.0 0.0100.0 54.3 15.2 6.5 1.1 0.0 0.0 0.0 8.10
ID 45 39 8 10 5 0 0 0 109
Year
ABS. 212 114 24 10 3 0 0 0 363 151 37 13 3 0 0 0 193
REL. 58.4 31.4 6.6 2.7 0.8 0.0 0.0 0.0100.0 41.6 10.2 3.6 0.8 0.0 0.0 0.0 19.1
ID 58 31 6 5 4 0 0 0 106

Note:

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