Detailed overview of ambient air pollution valuis from individual stations

Year: 2000
Pollutant:NOx-nitrogen oxides(oxides of nitrogen)
Station: 772 - Pha2-Riegrovy sady
Code:CZ02CMRIE
Institution:Czech Hydrometeorological Institute
Region:Hlavni mesto Praha
District:Praha 2
IHd: 100
Measure method:chemiluminescence
Unit:ug/m^3

Average daily concentrations

Day/
Month

12345678910111213141516171819202122232425262728293031XMaxN
1 57 47 43 47 69 148 128 49 55 56 47 52 31 40 60 39 33 27 32 34 27 45 47 82 79 68 66 55 22 28 27 52.93 148.14 31.00
2 45 35 35 37 29 46 30 19 21 40 64 38 26 42 50 38 41 ~ ~ ~ ~ 65 77 50 ~ ~ ~ ~ 33 ~ ~ 41.04 77.36 21.00
3 34 29 25 22 25 42 33 28 26 42 23 42 63 36 26 38 40 43 38 54 43 112 108 94 53 36 29 39 33 45 40 43.18 112.50 31.00
4 53 38 46 71 37 31 34 47 40 46 81 56 24 60 34 30 37 58 53 ~ ~ 36 24 22 35 52 32 23 25 48 ~ 41.87 81.32 28.00
5 35 28 37 69 46 26 18 31 51 67 40 21 17 51 45 44 38 31 29 16 23 28 38 35 27 28 19 18 23 22 35 33.42 69.23 31.00
6 33 23 24 31 28 27 28 35 26 20 18 33 26 33 24 17 22 ~ ~ 36 50 29 32 23 22 22 28 29 35 36 ~ 28.22 50.47 28.00
7 28 48 29 23 13 28 27 18 14 22 37 31 24 27 21 22 29 32 21 26 26 27 30 56 33 31 32 23 14 29 52 28.15 56.05 31.00
8 44 23 22 27 25 29 30 37 43 35 33 27 61 56 42 29 36 37 46 36 21 32 40 41 26 13 22 46 52 41 39 35.20 60.60 31.00
9 47 14 14 23 37 34 40 35 47 56 85 51 42 42 32 22 28 35 42 35 38 64 23 37 61 76 65 38 33 26 ~ 40.75 85.06 30.00
10 37 70 56 76 74 42 33 35 39 38 68 83 175 76 32 78 75 45 166 69 38 142 63 63 40 38 35 53 31 50 56 63.67 175.12 31.00
11 44 57 92 37 47 36 84 83 77 69 76 50 80 87 83 78 54 48 89 83 84 130 203 136 54 32 ~ 67 112 54 ~ 76.81 202.80 29.00
12 42 46 80 98 43 30 47 100 138 75 55 43 29 35 29 22 49 64 119 148 53 84 61 62 64 92 44 60 109 50 50 65.24 148.41 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. 24 49 6 4 0 0 0 0 83 59 10 4 0 0 0 0 148
REL. 28.9 59.0 7.2 4.8 0.0 0.0 0.0 0.0 100.0 71.1 12.0 4.8 0.0 0.0 0.0 0.06.1
ID 28 59 7 9 0 0 0 0 104
ABS. 48 35 4 0 0 0 0 0 87 39 4 0 0 0 0 0 81
REL. 55.1 40.2 4.5 0.0 0.0 0.0 0.0 0.0 100.0 44.8 4.6 0.0 0.0 0.0 0.0 0.0 11.4
ID 55 40 4 0 0 0 0 0 100
ABS. 50 40 2 0 0 0 0 0 92 42 2 0 0 0 0 0 85
REL. 54.3 43.4 2.1 0.0 0.0 0.0 0.0 0.0100.0 45.7 2.2 0.0 0.0 0.0 0.0 0.0 11.9
ID 54 43 2 0 0 0 0 0 100
ABS. 8 43 28 9 2 1 0 0 91 83 40 12 3 1 0 0 203
REL 8.7 47.2 30.7 9.8 2.1 1.0 0.0 0.0100.0 91.2 44.0 13.2 3.3 1.1 0.0 0.023.11
ID 8 47 30 19 10 27 0 0 145
Year
ABS. 130 167 40 13 2 1 0 0 353 223 56 16 3 1 0 0 203
REL. 36.8 47.3 11.3 3.6 0.5 0.2 0.0 0.0100.0 63.2 15.9 4.5 0.8 0.3 0.0 0.023.11
ID 36 47 11 7 2 7 0 0 112

Note:

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