Detailed overview of ambient air pollution valuis from individual stations

Year: 1998
Pollutant:NOx-nitrogen oxides(oxides of nitrogen)
Station: 125 - Ostrava-Poruba/CHMU
Code:CZOSCMPCM
Institution:CHMI
Region:Severomoravsky
District:Ostrava-mesto
IHd: 100
Measure method:guajacol (modif. Jakobs-Hochheiser) - spectrophotometry
Unit:ug/m^3

Average daily concentrations

Day/
Month

12345678910111213141516171819202122232425262728293031XMaxN
1 20 14 10 8.00 9.00 12 18 13 24 24 12 7.00 11 10 26 16 15 9.00 11 29 17 22 41 62 58 88 49 34 59 28 13 24.81 88.00 31.00
2 64 23 21 27 29 45 28 29 24 35 32 23 29 16 25 12 24 22 34 36 11 34 34 26 28 25 21 19 ~ ~ ~ 27.71 64.00 28.00
3 19 17 19 16 16 7.00 6.00 11 13 22 39 14 15 7.00 18 22 47 31 13 18 11 20 25 9.00 11 40 39 25 3.00 37 18 19.61 47.00 31.00
4 31 19 18 13 14 30 18 13 40 25 11 6.00 18 23 17 19 31 19 11 36 29 26 37 22 17 24 27 31 33 25 ~ 22.77 40.00 30.00
5 23 17 18 10 15 18 22 21 16 21 21 19 22 16 14 15 18 ~ 17 14 13 17 14 20 19 21 26 27 26 26 23 18.97 27.00 30.00
6 9.00 25 25 27 35 24 15 11 16 ~ 11 15 16 17 18 19 23 27 19 18 19 17 15 23 26 23 16 11 13 14 ~ 18.86 35.00 29.00
7 14 19 19 19 17 21 18 16 22 13 7.00 8.00 13 18 17 32 17 16 19 27 20 18 ~ 28 22 23 24 18 23 21 15 18.80 32.00 30.00
8 17 18 18 17 17 19 15 25 18 33 41 37 17 10 19 17 21 17 20 32 9.00 10 11 7.00 9.00 21 14 14 19 13 22 18.61 41.00 31.00
9 18 43 21 36 59 36 34 42 21 20 25 16 11 12 14 15 18 13 9.00 13 20 27 21 25 30 26 26 18 16 26 ~ 23.70 59.00 30.00
10 25 24 21 24 29 27 24 32 18 13 10 15 19 20 21 33 18 19 35 19 18 26 18 15 13 15 16 10 10 10 10 19.58 35.00 31.00
11 9.00 20 ~ 14 11 18 41 54 64 31 27 52 39 ~ 13 14 18 ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ 28.33 64.00 15.00
12 ~ ~ ~ 30 20 ~ 15 28 32 41 124 32 20 63 41 25 37 35 21 22 48 ~ 76 21 28 27 31 11 88 122 29 41.04 124.00 26.00

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. 71 18 1 0 0 0 0 0 90 19 1 0 0 0 0 0 88
REL. 78.8 20.0 1.1 0.0 0.0 0.0 0.0 0.0 100.0 21.1 1.1 0.0 0.0 0.0 0.0 0.026.1
ID 78 20 1 0 0 0 0 0 100
ABS. 85 4 0 0 0 0 0 0 89 4 0 0 0 0 0 0 40
REL. 95.5 4.4 0.0 0.0 0.0 0.0 0.0 0.0 100.0 4.5 0.0 0.0 0.0 0.0 0.0 0.0 9.4
ID 95 4 0 0 0 0 0 0 100
ABS. 83 8 0 0 0 0 0 0 91 8 0 0 0 0 0 0 59
REL. 91.2 8.7 0.0 0.0 0.0 0.0 0.0 0.0100.0 8.8 0.0 0.0 0.0 0.0 0.0 0.0 5.9
ID 91 8 0 0 0 0 0 0 100
ABS. 56 12 2 2 0 0 0 0 72 16 4 2 0 0 0 0 124
REL 77.7 16.6 2.7 2.7 0.0 0.0 0.0 0.0100.0 22.2 5.6 2.8 0.0 0.0 0.0 0.011.12
ID 77 16 2 5 0 0 0 0 102
Year
ABS. 295 42 3 2 0 0 0 0 342 47 5 2 0 0 0 0 124
REL. 86.2 12.2 0.8 0.5 0.0 0.0 0.0 0.0100.0 13.7 1.5 0.6 0.0 0.0 0.0 0.011.12
ID 86 12 1 0 0 0 0 100

Note:

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