Detailed overview of ambient air pollution valuis from individual stations

Year: 1999
Pollutant:NOx-nitrogen oxides(oxides of nitrogen)
Station:1300 - Pha8-Lyckovo nam.
Code:CZ08CMLYC
Institution:Czech Hydrometeorological Institute
Region:Hlavni mesto Praha
District:Praha 8
IHd: 100
Measure method:chemiluminescence
Unit:ug/m^3

Average daily concentrations

Day/
Month

12345678910111213141516171819202122232425262728293031XMaxN
1 24 30 63 53 101 277 46 48 39 29 47 43 48 41 40 74 67 68 50 48 45 103 48 45 42 62 66 51 24 21 48 57.80 276.86 31.00
2 67 96 75 43 29 28 ~ ~ ~ ~ 73 30 28 37 57 43 36 56 71 68 36 45 41 55 45 97 92 44 ~ ~ ~ 53.89 97.10 24.00
3 30 68 95 96 63 64 66 67 87 82 36 55 36 33 32 25 45 105 42 21 19 28 30 113 178 ~ ~ ~ 54 107 112 63.79 177.74 28.00
4 84 61 64 27 34 43 39 34 42 26 27 35 28 ~ ~ 38 31 49 53 76 53 77 76 48 49 68 56 69 66 101 ~ 51.93 101.44 28.00
5 69 61 87 52 50 41 39 43 66 41 37 38 ~ ~ ~ ~ ~ ~ 88 100 100 81 89 120 105 96 100 102 90 93 83 74.79 120.04 25.00
6 56 58 73 47 50 37 50 52 54 31 36 32 27 33 36 43 41 33 37 29 32 23 37 58 29 24 25 32 60 61 ~ 41.20 72.84 30.00
7 69 65 ~ ~ ~ ~ 38 44 38 27 34 49 36 32 44 40 40 46 44 37 26 27 28 21 55 28 ~ ~ 28 35 20 38.10 69.13 25.00
8 35 38 69 48 60 32 23 21 40 15 8.13 13 19 8.93 18 20 26 32 21 23 15 30 45 77 47 27 32 24 53 63 56 33.44 77.07 31.00
9 31 44 48 31 30 49 58 75 100 79 ~ ~ ~ ~ ~ ~ 34 19 24 27 51 68 69 61 58 39 53 55 39 71 ~ 50.61 100.35 24.00
10 38 42 37 49 64 58 66 53 51 70 71 ~ ~ ~ ~ 35 40 58 49 ~ 39 49 61 58 99 84 60 84 99 74 57 59.47 99.46 26.00
11 155 155 125 ~ 121 64 48 81 75 61 67 78 63 39 89 86 82 83 102 75 155 93 97 143 145 324 101 143 92 138 ~ 106.20 324.11 29.00
12 63 59 52 42 43 42 46 71 75 88 61 39 51 53 61 54 46 58 54 71 91 109 98 38 48 34 66 58 76 63 69 60.63 108.76 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. 17 41 17 6 1 1 0 0 83 66 25 8 2 1 0 0 277
REL. 20.4 49.3 20.4 7.2 1.2 1.2 0.0 0.0 100.0 79.5 30.1 9.6 2.4 1.2 0.0 0.06.1
ID 20 49 20 14 6 30 0 0 140
ABS. 16 44 19 4 0 0 0 0 83 67 23 4 0 0 0 0 120
REL. 19.2 53.0 22.8 4.8 0.0 0.0 0.0 0.0 100.0 80.7 27.7 4.8 0.0 0.0 0.0 0.0 24.5
ID 19 53 22 9 0 0 0 0 104
ABS. 34 37 8 1 0 0 0 0 80 46 9 1 0 0 0 0 100
REL. 42.5 46.2 10.0 1.2 0.0 0.0 0.0 0.0100.0 57.5 11.3 1.2 0.0 0.0 0.0 0.0 9.9
ID 42 46 10 2 0 0 0 0 101
ABS. 0 46 27 9 3 0 1 0 86 86 40 13 4 1 1 0 324
REL 0.0 53.4 31.3 10.4 3.4 0.0 1.1 0.0100.0 100.0 46.5 15.1 4.7 1.2 1.2 0.026.11
ID 0 53 31 20 17 0 145 0 268
Year
ABS. 67 168 71 20 4 1 1 0 332 265 97 26 6 2 1 0 324
REL. 20.1 50.6 21.3 6.0 1.2 0.3 0.3 0.0100.0 79.8 29.2 7.8 1.8 0.6 0.3 0.026.11
ID 20 50 21 12 6 7 37 0 155

Note:

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