Detailed overview of ambient air pollution valuis from individual stations

Year: 1999
Pollutant:NOx-nitrogen oxides(oxides of nitrogen)
Station: 441 - Pha6-Alzirska
Code:CZ06HSALZ
Institution:Public Health Service
Region:Hlavni mesto Praha
District:Praha 6
IHd: 100
Measure method:trithanolamine spectophotometry
Unit:ug/m^3

Average daily concentrations

Day/
Month

12345678910111213141516171819202122232425262728293031XMaxN
1 ~ ~ ~ 12 27 42 19 39 ~ ~ 60 28 46 26 66 ~ ~ 109 77 47 54 95 ~ ~ 71 78 93 87 ~ ~ ~ 56.63 109.00 19.00
2 ~ ~ ~ ~ 40 ~ ~ 37 153 64 27 7.00 ~ ~ 6.00 4.00 9.00 17 ~ ~ ~ ~ ~ 27 22 13 ~ ~ ~ ~ ~ 32.77 153.00 13.00
3 13 22 29 52 26 ~ ~ 69 41 43 30 60 ~ ~ 27 34 61 51 54 ~ ~ 21 8.00 ~ 122 85 ~ ~ 41 29 46 43.82 122.00 22.00
4 57 53 ~ ~ ~ 35 25 29 9.00 ~ ~ 4.00 9.00 20 10 15 ~ ~ 17 41 4.00 9.00 23 ~ ~ 47 42 17 36 49 ~ 26.24 57.00 21.00
5 ~ ~ 21 15 ~ ~ ~ ~ ~ ~ 19 37 39 ~ ~ ~ ~ 13 22 16 ~ ~ ~ ~ 55 71 38 ~ ~ ~ 19 30.42 71.00 12.00
6 33 46 37 71 ~ ~ 77 8.00 19 15 31 ~ ~ 58 24 43 28 28 ~ ~ 12 23 71 46 22 ~ ~ 28 70 47 ~ 38.05 77.00 22.00
7 ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
8 ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
9 30 42 60 ~ ~ 48 58 87 58 27 ~ ~ 60 65 37 49 88 ~ ~ 20 10 65 102 114 ~ ~ 61 89 7.00 9.00 ~ 53.91 114.00 22.00
10 9.00 ~ ~ 8.00 ~ 49 42 35 ~ ~ 36 12 11 8.00 ~ ~ ~ 17 ~ 8.00 47 70 ~ ~ 15 20 7.00 ~ 7.00 ~ ~ 23.59 70.00 17.00
11 43 43 40 75 64 ~ ~ 46 36 70 68 41 ~ ~ 28 19 29 19 15 ~ ~ 12 20 ~ 55 ~ ~ ~ ~ 63 ~ 41.37 75.00 19.00
12 ~ ~ ~ ~ ~ ~ ~ 9.00 19 12 ~ ~ 15 8.00 9.00 17 4.00 ~ ~ 8.00 20 18 13 ~ ~ ~ 17 15 7.00 6.00 10 12.18 20.00 17.00

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. 23 20 8 2 1 0 0 0 541 31 11 3 1 0 0 0 153
REL. 42.5 37.0 14.8 3.7 1.8 0.0 0.0 0.0 100.0 57.4 20.4 5.6 1.9 0.0 0.0 0.09.2
ID 42 37 14 7 9 0 0 0 111
ABS. 32 18 5 0 0 0 0 0 551 23 5 0 0 0 0 0 77
REL. 58.1 32.7 9.0 0.0 0.0 0.0 0.0 0.0 100.0 41.8 9.1 0.0 0.0 0.0 0.0 0.0 7.6
ID 58 32 9 0 0 0 0 0 100
ABS. 6 11 3 2 0 0 0 0 222 16 5 2 0 0 0 0 114
REL. 27.2 50.0 13.6 9.0 0.0 0.0 0.0 0.0100.0 72.7 22.7 9.1 0.0 0.0 0.0 0.0 24.9
ID 27 50 13 18 0 0 0 0 109
ABS. 35 14 4 0 0 0 0 0 531 18 4 0 0 0 0 0 75
REL 66.0 26.4 7.5 0.0 0.0 0.0 0.0 0.0100.0 34.0 7.5 0.0 0.0 0.0 0.0 0.0 4.11
ID 66 26 7 0 0 0 0 0 100
Year
ABS. 96 63 20 4 1 0 0 0 1841 88 25 5 1 0 0 0 153
REL. 52.1 34.2 10.8 2.1 0.5 0.0 0.0 0.0100.0 47.8 13.6 2.7 0.5 0.0 0.0 0.0 9.2
ID 52 34 10 4 2 0 0 0 104

Note:

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