Detailed overview of ambient air pollution valuis from individual stations

Year: 2000
Pollutant:NOx-nitrogen oxides(oxides of nitrogen)
Station: 777 - Pha6-Veleslavin
Code:CZ06CMVEL
Institution:Czech Hydrometeorological Institute
Region:Hlavni mesto Praha
District:Praha 6
IHd: 100
Measure method:chemiluminescence
Unit:ug/m^3

Average daily concentrations

Day/
Month

12345678910111213141516171819202122232425262728293031XMaxN
1 45 43 49 47 85 109 136 74 58 37 80 78 49 60 55 43 25 10 21 32 18 48 39 61 74 68 72 66 27 23 28 53.59 136.01 31.00
2 46 35 22 35 25 59 32 18 12 34 68 29 15 24 32 35 38 52 32 15 55 108 50 50 24 81 45 38 57 ~ ~ 40.18 108.31 29.00
3 30 20 24 11 17 41 31 25 16 37 14 33 46 33 14 20 16 38 28 32 58 134 114 95 93 40 18 37 58 56 43 40.95 133.55 31.00
4 64 63 72 81 24 20 18 28 ~ 56 91 54 41 80 46 71 60 71 70 ~ ~ ~ 52 28 34 83 63 44 60 61 ~ 55.16 90.61 26.00
5 37 50 ~ ~ ~ 58 44 45 56 54 35 32 37 73 78 64 54 36 35 17 38 24 42 43 30 46 21 25 26 20 32 41.11 77.95 28.00
6 55 42 41 47 46 24 25 47 48 36 25 31 34 25 18 10 23 49 73 63 52 25 40 17 22 12 17 22 25 25 ~ 33.89 73.49 30.00
7 29 52 28 21 12 19 32 11 18 25 33 20 20 26 13 11 16 22 13 15 17 18 25 46 42 30 30 ~ ~ ~ ~ 23.93 52.47 27.00
8 ~ ~ 30 27 22 20 24 36 70 39 23 24 67 60 33 42 38 50 39 45 21 26 34 32 19 27 45 35 51 44 52 37.06 69.78 29.00
9 44 15 11 12 26 37 29 40 57 52 62 76 34 38 57 26 26 51 67 58 51 35 38 51 64 85 74 66 55 49 ~ 46.23 85.08 30.00
10 47 58 44 57 74 25 18 36 48 48 90 82 113 62 46 116 49 21 171 79 74 133 75 54 39 36 31 79 41 58 38 62.70 170.61 31.00
11 42 82 106 38 86 59 115 89 69 52 54 73 105 85 89 108 42 57 126 68 71 141 157 76 52 38 48 80 130 77 ~ 80.57 157.48 30.00
12 61 58 79 109 62 45 67 144 145 44 46 46 32 33 27 16 39 75 83 150 77 111 85 72 49 97 59 60 145 42 37 70.80 149.60 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. 37 38 11 5 0 0 0 0 91 54 16 5 0 0 0 0 136
REL. 40.6 41.7 12.0 5.4 0.0 0.0 0.0 0.0 100.0 59.3 17.6 5.5 0.0 0.0 0.0 0.07.1
ID 40 41 12 10 0 0 0 0 105
ABS. 30 43 11 0 0 0 0 0 84 54 11 0 0 0 0 0 91
REL. 35.7 51.1 13.0 0.0 0.0 0.0 0.0 0.0 100.0 64.3 13.1 0.0 0.0 0.0 0.0 0.0 11.4
ID 35 51 13 0 0 0 0 0 100
ABS. 43 38 5 0 0 0 0 0 86 43 5 0 0 0 0 0 85
REL. 50.0 44.1 5.8 0.0 0.0 0.0 0.0 0.0100.0 50.0 5.8 0.0 0.0 0.0 0.0 0.0 26.9
ID 50 44 5 0 0 0 0 0 100
ABS. 8 39 27 16 2 0 0 0 92 84 45 18 2 0 0 0 171
REL 8.6 42.3 29.3 17.3 2.1 0.0 0.0 0.0100.0 91.3 48.9 19.6 2.2 0.0 0.0 0.019.10
ID 8 42 29 34 10 0 0 0 126
Year
ABS. 118 158 54 21 2 0 0 0 353 235 77 23 2 0 0 0 171
REL. 33.4 44.7 15.2 5.9 0.5 0.0 0.0 0.0100.0 66.6 21.8 6.5 0.6 0.0 0.0 0.019.10
ID 33 44 15 11 2 0 0 0 108

Note:

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