Detailed overview of ambient air pollution valuis from individual stations

Year: 2001
Pollutant:NOx-nitrogen oxides(oxides of nitrogen)
Station: 125 - Ostrava-Poruba/CHMU
Code:CZOSCMPCM
Institution:Czech Hydrometeorological Institute
Region:Moravskoslezsky
District:Ostrava-mesto
IHd: 100
Measure method:guajacol (modif. Jakobs-Hochheiser) - spectrophotometry
Unit:ug/m^3

Average daily concentrations

Day/
Month

12345678910111213141516171819202122232425262728293031XMaxN
1 21 8.00 19 62 15 11 30 16 24 43 38 25 23 71 87 128 132 144 148 51 58 76 29 12 22 26 19 24 35 27 18 46.52 148.00 31.00
2 21 17 39 64 19 15 29 30 13 14 18 15 19 37 35 49 24 9.00 21 12 8.00 10 22 25 47 44 54 17 ~ ~ ~ 25.96 64.00 28.00
3 13 29 29 23 16 41 18 20 30 15 10 13 17 15 12 15 22 22 12 15 38 25 41 18 19 21 38 43 54 29 25 23.81 54.00 31.00
4 35 25 26 19 24 17 10 6.00 16 28 22 16 7.00 11 2.00 16 15 13 19 21 9.00 7.00 19 20 25 19 20 8.00 14 20 ~ 16.97 35.00 30.00
5 22 21 38 21 14 11 8.00 14 23 18 12 11 12 13 17 24 17 13 13 12 16 22 22 21 15 13 11 15 12 15 12 16.39 38.00 31.00
6 14 7.00 7.00 8.00 11 14 16 15 13 17 10 11 22 20 18 9.00 5.00 8.00 7.00 11 12 14 2.00 11 13 13 14 22 14 10 ~ 12.27 22.00 30.00
7 9.00 9.00 17 19 14 22 12 6.00 9.00 14 10 14 16 14 13 11 6.00 9.00 16 12 2.00 2.00 14 10 11 13 13 13 16 18 18 12.32 22.00 31.00
8 16 21 19 7.00 10 20 20 12 15 16 10 14 20 38 30 26 15 18 22 21 13 17 19 29 18 22 17 9.00 21 33 23 19.06 38.00 31.00
9 12 15 20 14 10 18 16 5.00 2.00 11 11 14 26 30 26 16 21 31 32 26 18 12 32 25 21 33 34 18 24 28 ~ 20.03 34.00 30.00
10 13 14 20 31 40 28 26 46 32 26 21 32 22 27 48 40 43 58 41 34 28 17 26 33 17 12 10 12 18 15 15 27.26 58.00 31.00
11 11 22 20 12 20 20 13 10 17 29 17 28 20 24 28 29 30 17 20 17 25 18 14 11 13 39 28 26 48 35 ~ 22.03 48.00 30.00
12 27 40 45 25 32 65 65 53 63 65 84 52 43 65 34 15 55 36 20 19 14 23 15 10 9.00 13 31 12 11 11 10 34.26 84.00 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. 63 20 3 4 0 0 0 0 90 27 7 4 0 0 0 0 148
REL. 70.0 22.2 3.3 4.4 0.0 0.0 0.0 0.0 100.0 30.0 7.8 4.4 0.0 0.0 0.0 0.019.1
ID 70 22 3 8 0 0 0 0 104
ABS. 89 2 0 0 0 0 0 0 91 2 0 0 0 0 0 0 38
REL. 97.8 2.1 0.0 0.0 0.0 0.0 0.0 0.0 100.0 2.2 0.0 0.0 0.0 0.0 0.0 0.0 3.5
ID 97 2 0 0 0 0 0 0 100
ABS. 90 2 0 0 0 0 0 0 92 2 0 0 0 0 0 0 38
REL. 97.8 2.1 0.0 0.0 0.0 0.0 0.0 0.0100.0 2.2 0.0 0.0 0.0 0.0 0.0 0.0 14.8
ID 97 2 0 0 0 0 0 0 100
ABS. 67 24 1 0 0 0 0 0 92 25 1 0 0 0 0 0 84
REL 72.8 26.0 1.0 0.0 0.0 0.0 0.0 0.0100.0 27.2 1.1 0.0 0.0 0.0 0.0 0.011.12
ID 72 26 1 0 0 0 0 0 100
Year
ABS. 309 48 4 4 0 0 0 0 365 56 8 4 0 0 0 0 148
REL. 84.6 13.1 1.0 1.0 0.0 0.0 0.0 0.0100.0 15.3 2.2 1.1 0.0 0.0 0.0 0.0 19.1
ID 84 13 1 2 0 0 0 0 101

Note:

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