Detailed overview of ambient air pollution valuis from individual stations

Year: 1999
Pollutant:O3-ozone
Station: 774 - Pha4-Libus
Code:CZ04CMLIB
Institution:Czech Hydrometeorological Institute
Region:Hlavni mesto Praha
District:Praha 4
IHd: 160
Measure method:UV-absorption
Unit:ug/m^3

Average daily concentrations

Day/
Month

12345678910111213141516171819202122232425262728293031XMaxN
1 47 ~ ~ ~ ~ 36 48 46 26 36 21 33 40 48 55 61 45 29 26 23 23 8.79 25 42 54 43 37 31 51 53 34 37.90 60.70 54.00
2 27 13 10 32 71 68 57 53 23 23 39 61 58 48 58 53 68 60 32 34 59 61 64 56 58 49 72 60 ~ ~ ~ 48.87 72.03 56.00
3 68 36 37 46 37 48 39 53 46 43 36 43 48 40 56 56 27 34 43 58 64 59 44 36 46 62 68 55 31 38 60 46.98 67.84 62.00
4 69 65 69 58 45 47 56 52 51 78 56 56 60 75 72 39 65 71 67 74 71 50 66 76 62 45 37 36 62 58 ~ 59.61 77.88 60.00
5 97 58 68 84 79 75 53 39 64 80 48 71 58 56 73 59 88 84 71 89 49 67 74 63 64 68 82 94 80 81 75 70.80 97.38 62.00
6 81 76 55 48 52 85 ~ 36 ~ 93 59 65 70 58 74 43 58 45 29 71 51 51 61 43 77 93 59 51 67 63 ~ 61.23 93.15 56.00
7 55 65 93 104 92 83 60 46 41 74 69 54 81 64 45 63 95 83 97 91 59 64 42 59 65 74 60 68 66 59 67 68.85 104.36 62.00
8 69 78 86 98 72 99 65 80 47 53 45 48 45 84 51 44 42 59 50 67 62 51 54 71 87 88 66 54 25 53 40 62.42 98.94 62.00
9 46 26 54 68 53 57 55 67 70 75 72 61 72 66 78 70 76 73 66 60 30 45 35 41 26 36 48 34 43 36 ~ 54.60 77.63 60.00
10 41 55 50 38 16 32 25 35 27 24 27 22 17 27 25 ~ ~ 21 36 36 27 24 17 24 14 32 24 33 19 19 37 28.34 55.46 58.00
11 33 27 12 15 11 19 23 7.63 2.50 5.75 3.93 11 11 31 17 27 17 33 13 9 10 19 8.47 8.90 13 16 34 35 25 24 ~ 17.36 35.19 60.00
12 33 41 56 60 47 49 51 43 43 29 46 50 42 42 22 27 40 34 42 24 14 16 22 44 46 60 41 20 25 33 29 37.76 59.67 62.00

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- 53 54- 107 108- 160 161- 240 241- 320 321- 480 481- 640 over 640 53 107 160 240 320 480 640
ABS. 116 56 0 0 0 0 0 0 172 56 0 0 0 0 0 0 72
REL. 67.4 32.5 0.0 0.0 0.0 0.0 0.0 0.0 100.0 32.6 0.0 0.0 0.0 0.0 0.0 0.027.2
ID 67 32 0 0 0 0 0 0 100
ABS. 46 132 0 0 0 0 0 0 178 132 0 0 0 0 0 0 97
REL. 25.8 74.1 0.0 0.0 0.0 0.0 0.0 0.0 100.0 74.2 0.0 0.0 0.0 0.0 0.0 0.0 1.5
ID 25 74 0 0 0 0 0 0 100
ABS. 60 124 0 0 0 0 0 0 184 124 0 0 0 0 0 0 104
REL. 32.6 67.3 0.0 0.0 0.0 0.0 0.0 0.0100.0 67.4 0.0 0.0 0.0 0.0 0.0 0.0 4.7
ID 32 67 0 0 0 0 0 0 100
ABS. 172 8 0 0 0 0 0 0 180 8 0 0 0 0 0 0 60
REL 95.5 4.4 0.0 0.0 0.0 0.0 0.0 0.0100.0 4.4 0.0 0.0 0.0 0.0 0.0 0.026.12
ID 95 4 0 0 0 0 0 0 100
Year
ABS. 394 320 0 0 0 0 0 0 714 320 0 0 0 0 0 0 104
REL. 55.1 44.8 0.0 0.0 0.0 0.0 0.0 0.0100.0 44.8 0.0 0.0 0.0 0.0 0.0 0.0 4.7
ID 55 44 0 0 0 0 0 0 100

Note:

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