Detailed overview of ambient air pollution valuis from individual stations

Year: 1998
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 ~ 31 ~ ~ 15 16 22 13 26 ~ ~ 30 ~ 30 32 29 ~ ~ 27 17 17 28 7.00 ~ ~ 18 35 41 37 37 ~ 25.40 41.00 20.00
2 ~ 27 34 103 89 72 ~ ~ 33 14 6.00 8.00 5.00 ~ ~ 35 40 60 54 117 ~ ~ 73 ~ ~ ~ ~ ~ ~ ~ ~ 48.13 117.00 16.00
3 ~ 19 19 18 14 17 ~ ~ ~ 8.00 13 9.00 ~ ~ ~ 49 35 ~ ~ ~ ~ ~ 17 30 38 47 49 ~ ~ 47 59 28.71 59.00 17.00
4 63 ~ 33 ~ ~ 34 29 28 27 13 ~ ~ ~ ~ 22 29 18 ~ ~ ~ ~ ~ ~ 10 ~ ~ ~ ~ ~ ~ ~ 27.82 63.00 11.00
5 ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ 13 17 14 25 ~ ~ 34 24 31 20 21 ~ ~ 27 27 30 25 22 ~ ~ 23.57 34.00 14.00
6 29 37 24 28 12 ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ 16 11 27 36 ~ ~ 31 16 11 11 20 ~ ~ 23 18 ~ 21.88 37.00 16.00
7 ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
8 ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
9 76 79 32 66 ~ ~ 62 60 38 32 69 ~ ~ 49 57 73 49 ~ ~ ~ 53 40 49 59 46 ~ ~ 27 58 40 ~ 53.05 79.00 21.00
10 32 68 ~ ~ 54 42 55 45 81 ~ ~ 49 53 67 67 57 ~ ~ 58 22 37 49 35 ~ ~ 20 10 ~ 13 14 ~ 44.19 81.00 21.00
11 ~ 32 25 28 15 64 ~ ~ 61 60 83 36 ~ ~ ~ 34 31 117 56 118 ~ ~ 149 211 111 47 132 ~ ~ 109 ~ 75.95 211.00 20.00
12 87 130 135 294 ~ ~ 139 49 77 94 71 ~ ~ 189 183 236 181 33 ~ ~ 27 12 23 ~ ~ ~ ~ 20 54 99 28 102.90 294.00 21.00

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 16 3 2 0 0 0 0 531 21 5 2 0 0 0 0 117
REL. 60.3 30.1 5.6 3.7 0.0 0.0 0.0 0.0 100.0 39.6 9.4 3.8 0.0 0.0 0.0 0.020.2
ID 60 30 5 7 0 0 0 0 103
ABS. 36 5 0 0 0 0 0 0 411 5 0 0 0 0 0 0 63
REL. 87.8 12.1 0.0 0.0 0.0 0.0 0.0 0.0 100.0 12.2 0.0 0.0 0.0 0.0 0.0 0.0 1.4
ID 87 12 0 0 0 0 0 0 100
ABS. 3 14 4 0 0 0 0 0 212 18 4 0 0 0 0 0 79
REL. 14.2 66.6 19.0 0.0 0.0 0.0 0.0 0.0100.0 85.7 19.0 0.0 0.0 0.0 0.0 0.0 2.9
ID 14 66 19 0 0 0 0 0 100
ABS. 17 20 10 9 3 3 0 0 62 45 25 15 6 3 0 0 294
REL 27.4 32.2 16.1 14.5 4.8 4.8 0.0 0.0100.0 72.6 40.3 24.2 9.7 4.8 0.0 0.0 4.12
ID 27 32 16 29 24 120 0 0 250
Year
ABS. 88 55 17 11 3 3 0 0 1771 89 34 17 6 3 0 0 294
REL. 49.7 31.0 9.6 6.2 1.6 1.6 0.0 0.0100.0 50.3 19.2 9.6 3.4 1.7 0.0 0.0 4.12
ID 49 31 9 12 8 42 0 0 153

Note:

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