Detailed overview of ambient air pollution valuis from individual stations

774 - PHA4-Libus

Year: 1997
Pollutant:NOx-nitrogen oxides(oxides of nitrogen)
Station: 774 - PHA4-Libus
Code:CZ04CMLIB
Institution:CHMI
Region:Hlavni mesto Praha
District:Praha 4
IHd: 100
Measure method:chemiluminescence
Unit:ug/m^3

Average daily concentrations

Day/
Month

12345678910111213141516171819202122232425262728293031XMaxN
1 90 93 55 69 72 68 116 169 58 65 53 34 107 175 161 126 157 89 43 155 ~ 36 88 106 69 29 59 43 52 41 30 83.56 174.72 30.00
2 41 58 68 33 40 29 35 49 31 25 18 20 19 29 24 27 41 25 21 18 21 28 25 31 32 27 23 27 ~ ~ ~ 31.00 68.24 28.00
3 31 24 35 30 54 77 53 56 54 65 56 55 42 39 35 25 46 34 34 30 41 26 17 39 52 34 37 12 12 19 37 38.66 76.71 31.00
4 51 63 31 16 18 18 34 37 49 38 21 18 24 27 20 22 39 33 21 31 53 45 30 29 32 32 32 26 35 26 ~ 31.67 63.18 30.00
5 36 26 35 27 23 24 40 42 19 18 25 38 40 51 41 37 24 20 33 27 28 30 32 25 31 34 20 29 22 19 22 29.69 50.92 31.00
6 20 29 33 40 25 31 19 18 31 46 35 48 26 21 34 31 46 44 28 24 19 18 24 22 45 28 36 28 28 28 ~ 30.15 48.02 30.00
7 23 23 29 27 23 12 17 19 25 31 24 21 26 29 30 33 25 23 12 14 33 27 24 31 24 13 22 35 25 29 25 24.29 34.73 31.00
8 27 20 22 ~ 32 34 33 28 27 28 44 34 45 35 31 19 24 73 42 53 47 30 28 38 34 43 45 39 27 25 36 34.68 72.69 30.00
9 42 59 62 41 28 25 23 38 30 30 37 26 37 35 45 43 47 66 43 33 54 73 67 58 71 55 42 48 53 53 ~ 45.54 73.01 30.00
10 44 26 16 31 37 44 38 36 60 52 23 31 31 38 49 72 50 50 61 73 100 112 72 43 28 43 96 99 121 81 47 54.96 121.24 31.00
11 ~ ~ 48 55 104 237 160 71 79 56 134 101 65 67 40 46 63 29 49 86 117 87 105 114 59 98 85 91 50 52 ~ 83.83 236.54 28.00
12 59 60 61 40 60 37 45 56 114 28 34 38 20 99 23 38 27 36 79 41 118 176 82 23 13 10 18 26 30 39 118 53.16 176.29 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. 33 37 10 4 5 0 0 0 89 56 19 9 5 0 0 0 175
REL. 37.0 41.5 11.2 4.4 5.6 0.0 0.0 0.0 100.0 62.9 21.3 10.1 5.6 0.0 0.0 0.014.1
ID 37 41 11 8 28 0 0 0 126
ABS. 61 30 0 0 0 0 0 0 91 30 0 0 0 0 0 0 63
REL. 67.0 32.9 0.0 0.0 0.0 0.0 0.0 0.0 100.0 33.0 0.0 0.0 0.0 0.0 0.0 0.0 2.4
ID 67 32 0 0 0 0 0 0 100
ABS. 52 35 4 0 0 0 0 0 91 39 4 0 0 0 0 0 73
REL. 57.1 38.4 4.3 0.0 0.0 0.0 0.0 0.0100.0 42.9 4.4 0.0 0.0 0.0 0.0 0.0 22.9
ID 57 38 4 0 0 0 0 0 100
ABS. 18 40 17 12 2 1 0 0 90 72 32 15 3 1 0 0 237
REL 20.0 44.4 18.8 13.3 2.2 1.1 0.0 0.0100.0 80.0 35.6 16.7 3.3 1.1 0.0 0.0 6.11
ID 20 44 18 26 11 27 0 0 148
Year
ABS. 164 142 31 16 7 1 0 0 361 197 55 24 8 1 0 0 237
REL. 45.4 39.3 8.5 4.4 1.9 0.2 0.0 0.0100.0 54.6 15.2 6.6 2.2 0.3 0.0 0.0 6.11
ID 45 39 8 8 9 6 0 0 118

Note:

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

Detailed overview of ambient air pollution valuis from individual stations - selection station