Detailed overview of ambient air pollution valuis from individual stations

Year: 2001
Pollutant:NOx-nitrogen oxides(oxides of nitrogen)
Station:1064 - Ostrava-Zabreh
Code:CZOSCMZAB
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 28 15 25 216 22 16 67 47 38 47 69 43 49 121 123 146 182 192 214 46 76 126 55 24 49 31 50 48 70 70 40 75.65 216.33 31.00
2 36 30 65 93 23 14 74 77 21 35 27 16 32 70 51 54 52 15 22 27 12 19 29 35 40 53 86 38 ~ ~ ~ 41.01 93.24 28.00
3 18 56 59 39 41 93 22 57 58 20 13 26 23 16 20 28 46 54 26 41 60 44 73 24 39 55 51 69 68 30 43 42.31 92.54 31.00
4 38 55 29 23 51 21 19 26 45 53 59 35 20 21 7.19 15 25 20 33 52 25 18 38 46 55 24 25 11 41 34 ~ 32.15 58.92 30.00
5 48 45 75 41 22 22 30 38 45 48 25 19 26 11 19 28 30 24 20 21 32 38 31 27 32 23 13 27 23 22 17 29.72 75.17 31.00
6 26 7.74 11 16 23 23 16 24 23 26 21 21 48 46 36 17 18 25 28 33 28 29 8.06 32 27 29 38 31 25 22 ~ 25.26 47.74 30.00
7 22 24 44 28 23 26 10 8.75 10 29 12 22 25 23 20 27 23 19 31 29 16 23 32 23 26 28 27 26 37 32 23 24.23 43.96 31.00
8 32 49 26 13 13 24 25 12 30 25 19 24 22 44 30 33 17 32 33 27 28 33 45 47 30 38 17 18 46 56 23 29.34 55.99 31.00
9 14 25 33 23 26 29 30 8.22 5.84 11 17 15 76 76 29 26 47 61 93 66 22 19 41 48 36 56 36 40 48 30 ~ 36.28 92.56 30.00
10 14 15 19 35 76 48 96 158 47 37 20 49 20 20 73 76 ~ ~ ~ 53 45 ~ ~ ~ 25 16 12 15 24 ~ ~ 43.09 157.52 23.00
11 ~ ~ ~ 14 ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ 29 44 34 21 33 34 29 22 22 26 29 67 36 32 60 51 ~ 34.25 66.89 17.00
12 40 44 57 28 33 148 79 101 133 64 103 70 83 108 57 34 71 40 23 30 15 42 21 10 9 16 20 11 14 12 20 49.54 147.84 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. 32 36 14 4 2 2 0 0 90 58 22 8 4 2 0 0 216
REL. 35.5 40.0 15.5 4.4 2.2 2.2 0.0 0.0 100.0 64.4 24.4 8.9 4.4 2.2 0.0 0.04.1
ID 35 40 15 8 11 55 0 0 166
ABS. 65 25 1 0 0 0 0 0 91 26 1 0 0 0 0 0 75
REL. 71.4 27.4 1.0 0.0 0.0 0.0 0.0 0.0 100.0 28.6 1.1 0.0 0.0 0.0 0.0 0.0 3.5
ID 71 27 1 0 0 0 0 0 100
ABS. 69 20 3 0 0 0 0 0 92 23 3 0 0 0 0 0 93
REL. 75.0 21.7 3.2 0.0 0.0 0.0 0.0 0.0100.0 25.0 3.3 0.0 0.0 0.0 0.0 0.0 19.9
ID 75 21 3 0 0 0 0 0 100
ABS. 35 21 9 5 1 0 0 0 71 36 15 6 1 0 0 0 158
REL 49.2 29.5 12.6 7.0 1.4 0.0 0.0 0.0100.0 50.7 21.1 8.5 1.4 0.0 0.0 0.0 8.10
ID 49 29 12 14 7 0 0 0 112
Year
ABS. 201 102 27 9 3 2 0 0 344 143 41 14 5 2 0 0 216
REL. 58.4 29.6 7.8 2.6 0.8 0.5 0.0 0.0100.0 41.6 11.9 4.1 1.5 0.6 0.0 0.0 4.1
ID 58 29 7 5 4 14 0 0 120

Note:

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