Detailed overview of ambient air pollution valuis from individual stations

Year: 1999
Pollutant:NOx-nitrogen oxides(oxides of nitrogen)
Station:1061 - Ostrava-Fifejdy
Code:CZOSCMFIF
Institution:Czech Hydrometeorological Institute
Region:Severomoravsky
District:Ostrava-mesto
IHd: 100
Measure method:chemiluminescence
Unit:ug/m^3

Average daily concentrations

Day/
Month

12345678910111213141516171819202122232425262728293031XMaxN
1 12 12 16 22 22 23 29 25 24 33 50 25 29 20 17 19 24 224 35 26 31 30 27 16 23 39 35 34 21 27 23 32.02 223.83 31.00
2 44 68 40 34 34 17 13 21 37 46 37 22 25 24 26 25 19 30 28 30 17 24 24 27 25 25 23 43 ~ ~ ~ 29.55 68.04 28.00
3 17 22 46 29 20 38 21 48 46 57 20 34 28 38 35 21 ~ ~ ~ ~ ~ ~ 29 50 27 20 23 32 21 53 51 33.15 56.80 25.00
4 44 35 33 46 27 21 24 14 49 29 20 34 51 16 14 35 ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ 30.81 51.49 16.00
5 ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ 18 22 25 13 31 36 48 32 29 37 13 41 49 52 34 68 53 33 47 51 36.60 67.51 20.00
6 40 54 56 37 31 26 24 18 21 26 36 11 11 21 17 26 20 17 22 21 9 7.22 53 33 21 21 26 29 27 35 ~ 26.60 56.13 30.00
7 25 27 21 22 19 8.89 19 13 22 8.27 18 46 22 18 22 32 31 46 35 12 18 19 23 15 17 22 17 20 23 22 20 22.00 46.27 31.00
8 17 35 39 64 34 46 23 15 31 20 ~ 21 18 16 20 14 22 22 15 20 19 25 47 75 49 61 35 13 24 75 31 31.59 74.76 30.00
9 19 25 26 43 38 83 32 60 41 32 28 49 42 41 52 91 82 48 31 19 21 24 25 27 20 38 42 33 19 18 ~ 38.38 91.49 30.00
10 21 27 21 36 28 34 35 23 15 19 23 58 57 36 22 16 43 79 44 38 38 78 25 34 27 25 37 26 98 29 27 36.08 98.50 31.00
11 29 23 39 63 60 62 21 43 65 70 50 107 30 23 59 107 34 50 72 32 69 83 32 29 53 36 21 26 19 20 ~ 47.62 106.84 30.00
12 33 28 25 15 22 24 22 31 27 36 36 16 36 29 33 29 28 20 50 80 42 163 36 10 12 19 30 43 29 26 37 34.43 162.76 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. 58 24 1 0 0 1 0 0 84 26 2 1 1 1 0 0 224
REL. 69.0 28.5 1.1 0.0 0.0 1.1 0.0 0.0 100.0 31.0 2.4 1.2 1.2 1.2 0.0 0.018.1
ID 69 28 1 0 0 29 0 0 128
ABS. 41 24 1 0 0 0 0 0 66 25 1 0 0 0 0 0 68
REL. 62.1 36.3 1.5 0.0 0.0 0.0 0.0 0.0 100.0 37.9 1.5 0.0 0.0 0.0 0.0 0.0 27.5
ID 62 36 1 0 0 0 0 0 100
ABS. 63 23 5 0 0 0 0 0 91 28 5 0 0 0 0 0 91
REL. 69.2 25.2 5.4 0.0 0.0 0.0 0.0 0.0100.0 30.8 5.5 0.0 0.0 0.0 0.0 0.0 16.9
ID 69 25 5 0 0 0 0 0 100
ABS. 49 32 8 2 1 0 0 0 92 43 11 3 1 0 0 0 163
REL 53.2 34.7 8.6 2.1 1.0 0.0 0.0 0.0100.0 46.7 12.0 3.3 1.1 0.0 0.0 0.022.12
ID 53 34 8 4 5 0 0 0 106
Year
ABS. 211 103 15 2 1 1 0 0 333 122 19 4 2 1 0 0 224
REL. 63.3 30.9 4.5 0.6 0.3 0.3 0.0 0.0100.0 36.6 5.7 1.2 0.6 0.3 0.0 0.0 18.1
ID 63 30 4 1 1 7 0 0 109

Note:

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