Detailed overview of ambient air pollution valuis from individual stations

Year: 1998
Pollutant:NOx-nitrogen oxides(oxides of nitrogen)
Station:1300 - Pha8-Lyckovo nam.
Code:CZ08CMLYC
Institution:CHMI
Region:Hlavni mesto Praha
District:Praha 8
IHd: 100
Measure method:chemiluminescence
Unit:ug/m^3

Average daily concentrations

Day/
Month

12345678910111213141516171819202122232425262728293031XMaxN
1 63 76 20 26 32 39 48 34 39 185 115 74 60 118 244 84 33 58 51 43 35 49 50 52 59 209 169 98 122 66 63 77.88 243.97 31.00
2 71 84 70 145 211 124 62 58 87 110 85 58 55 45 40 40 49 82 84 83 104 112 91 76 128 79 38 26 ~ ~ ~ 82.08 210.77 28.00
3 30 38 33 29 28 31 21 20 41 75 57 51 35 30 51 59 53 52 36 33 26 37 46 49 69 81 59 63 46 77 125 47.75 125.29 31.00
4 147 57 53 31 49 48 30 49 49 34 46 24 54 44 60 80 41 37 37 68 62 55 51 47 38 27 24 33 29 26 ~ 47.70 146.99 30.00
5 19 18 29 28 37 36 99 41 28 45 45 73 30 29 32 23 26 41 39 38 40 27 29 28 30 36 43 28 28 27 37 35.74 98.96 31.00
6 37 40 53 36 40 23 21 42 53 28 32 25 21 41 35 22 35 34 35 40 44 32 29 40 39 25 21 22 33 27 ~ 33.57 53.38 30.00
7 27 46 29 20 19 25 35 29 30 31 15 19 22 31 33 39 26 18 52 68 36 45 36 36 23 28 37 33 27 39 59 32.68 68.13 31.00
8 34 30 70 48 49 54 59 58 42 63 77 70 71 64 54 42 70 ~ ~ 70 35 23 24 27 31 38 31 29 27 32 63 47.71 76.96 29.00
9 74 46 35 46 32 51 60 ~ 46 49 76 37 40 23 34 39 42 45 50 43 51 60 63 74 122 64 121 84 121 ~ ~ 58.21 122.44 28.00
10 40 46 42 ~ ~ ~ ~ ~ 78 17 16 ~ 48 ~ ~ 77 31 46 71 44 42 46 46 24 15 33 18 11 20 18 15 36.72 78.23 23.00
11 13 38 22 29 27 34 84 55 81 75 32 56 53 30 32 61 49 54 76 41 39 58 141 221 71 104 147 129 53 81 ~ 66.17 220.80 30.00
12 38 85 82 63 41 34 47 60 130 174 150 154 41 84 140 66 151 225 41 49 74 77 101 51 40 33 40 72 95 48 30 81.20 225.21 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. 14 42 19 10 2 3 0 0 90 76 34 15 5 3 0 0 244
REL. 15.5 46.6 21.1 11.1 2.2 3.3 0.0 0.0 100.0 84.4 37.8 16.7 5.6 3.3 0.0 0.015.1
ID 15 46 21 22 11 83 0 0 200
ABS. 39 47 4 1 0 0 0 0 91 52 5 1 0 0 0 0 147
REL. 42.8 51.6 4.3 1.0 0.0 0.0 0.0 0.0 100.0 57.1 5.5 1.1 0.0 0.0 0.0 0.0 1.4
ID 42 51 4 2 0 0 0 0 101
ABS. 30 44 11 3 0 0 0 0 88 58 14 3 0 0 0 0 122
REL. 34.0 50.0 12.5 3.4 0.0 0.0 0.0 0.0100.0 65.9 15.9 3.4 0.0 0.0 0.0 0.0 25.9
ID 34 50 12 6 0 0 0 0 103
ABS. 20 35 16 7 4 2 0 0 84 64 29 13 6 2 0 0 225
REL 23.8 41.6 19.0 8.3 4.7 2.3 0.0 0.0100.0 76.2 34.5 15.5 7.1 2.4 0.0 0.018.12
ID 23 41 19 16 23 59 0 0 184
Year
ABS. 103 168 50 21 6 5 0 0 353 250 82 32 11 5 0 0 244
REL. 29.1 47.5 14.1 5.9 1.6 1.4 0.0 0.0100.0 70.8 23.2 9.1 3.1 1.4 0.0 0.0 15.1
ID 29 47 14 11 8 35 0 0 146

Note:

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