Detailed overview of ambient air pollution valuis from individual stations

Year: 2000
Pollutant:NOx-nitrogen oxides(oxides of nitrogen)
Station: 780 - Pha9-Vysocany
Code:CZ09CMVYS
Institution:Czech Hydrometeorological Institute
Region:Hlavni mesto Praha
District:Praha 9
IHd: 100
Measure method:chemiluminescence
Unit:ug/m^3

Average daily concentrations

Day/
Month

12345678910111213141516171819202122232425262728293031XMaxN
1 66 100 63 51 223 145 156 45 43 77 123 65 24 51 71 50 38 28 35 41 30 34 67 104 95 84 80 65 22 35 36 69.21 222.72 31.00
2 97 48 55 47 44 123 53 29 26 51 136 48 ~ 52 54 42 49 40 53 30 122 75 103 59 43 159 91 69 56 ~ ~ 66.29 159.17 28.00
3 50 ~ ~ ~ ~ 44 38 33 25 50 23 43 90 42 28 44 52 64 42 61 64 121 150 82 106 36 41 48 29 46 49 55.62 150.35 27.00
4 78 36 33 90 40 34 32 65 29 44 81 68 26 81 27 30 34 73 52 85 134 31 14 20 44 45 22 15 19 40 ~ 47.33 134.19 30.00
5 35 25 34 44 34 24 13 30 58 76 45 16 15 59 49 60 50 46 44 19 26 41 43 55 26 19 ~ ~ 46 34 59 38.77 76.44 29.00
6 51 27 23 41 32 45 48 35 21 15 20 43 27 36 37 28 34 36 50 39 69 32 40 18 26 26 39 38 41 52 ~ 35.59 69.03 30.00
7 25 50 32 23 13 43 23 17 14 25 45 42 26 33 29 28 40 44 28 38 31 30 28 60 59 ~ 55 29 17 56 90 35.75 89.82 30.00
8 52 32 29 36 23 33 46 55 79 56 37 19 64 77 47 47 55 58 43 39 26 49 63 43 32 11 21 65 104 54 45 46.44 104.39 31.00
9 71 17 21 29 53 47 75 74 62 79 103 77 55 66 27 22 32 30 37 29 37 73 18 36 77 83 82 36 21 17 ~ 49.53 102.54 30.00
10 23 125 67 98 91 49 30 46 49 44 71 83 179 56 21 84 104 62 170 63 26 129 84 97 53 50 45 52 41 59 57 71.20 178.80 31.00
11 59 60 72 43 64 30 173 95 166 103 116 45 65 89 123 101 49 67 81 85 121 156 191 146 52 35 ~ 74 114 49 ~ 90.43 190.91 29.00
12 35 42 75 71 36 31 39 88 118 74 99 77 43 39 35 23 61 117 145 111 57 72 61 52 53 75 44 100 149 82 77 70.33 148.98 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. 12 49 12 9 3 1 0 0 86 74 25 13 4 1 0 0 223
REL. 13.9 56.9 13.9 10.4 3.4 1.1 0.0 0.0 100.0 86.0 29.1 15.1 4.7 1.2 0.0 0.05.1
ID 13 56 13 20 17 29 0 0 152
ABS. 34 45 9 1 0 0 0 0 89 55 10 1 0 0 0 0 134
REL. 38.2 50.5 10.1 1.1 0.0 0.0 0.0 0.0 100.0 61.8 11.2 1.1 0.0 0.0 0.0 0.0 21.4
ID 38 50 10 2 0 0 0 0 101
ABS. 38 39 12 2 0 0 0 0 91 53 14 2 0 0 0 0 104
REL. 41.7 42.8 13.1 2.1 0.0 0.0 0.0 0.0100.0 58.2 15.4 2.2 0.0 0.0 0.0 0.0 29.8
ID 41 42 13 4 0 0 0 0 102
ABS. 7 37 26 15 6 0 0 0 91 84 47 21 6 0 0 0 191
REL 7.6 40.6 28.5 16.4 6.5 0.0 0.0 0.0100.0 92.3 51.6 23.1 6.6 0.0 0.0 0.023.11
ID 7 40 28 32 32 0 0 0 142
Year
ABS. 91 170 59 27 9 1 0 0 357 266 96 37 10 1 0 0 223
REL. 25.4 47.6 16.5 7.5 2.5 0.2 0.0 0.0100.0 74.5 26.9 10.4 2.8 0.3 0.0 0.0 5.1
ID 25 47 16 15 12 7 0 0 124

Note:

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