Detailed overview of ambient air pollution valuis from individual stations

Year: 1998
Pollutant:NOx-nitrogen oxides(oxides of nitrogen)
Station: 430 - Pha1-Rytirska
Code:CZ01HSRYT
Institution:Public Health Service
Region:Hlavni mesto Praha
District:Praha 1
IHd: 100
Measure method:trithanolamine spectophotometry
Unit:ug/m^3

Average daily concentrations

Day/
Month

12345678910111213141516171819202122232425262728293031XMaxN
1 ~ 59 ~ ~ 39 39 60 32 36 ~ ~ ~ 72 106 169 84 ~ ~ 63 49 37 51 47 ~ ~ 171 177 113 114 61 ~ 78.95 177.00 20.00
2 ~ 74 71 122 164 158 ~ ~ 97 119 98 60 39 ~ ~ 49 62 97 79 48 ~ ~ 78 75 137 96 43 ~ ~ ~ ~ 88.30 164.00 20.00
3 ~ 36 38 33 30 38 ~ ~ 43 88 80 50 41 ~ ~ 59 55 47 43 42 ~ ~ 65 60 81 113 93 ~ ~ 91 90 59.82 113.00 22.00
4 70 73 63 ~ ~ 42 53 50 76 74 ~ ~ ~ 49 72 69 58 ~ ~ 72 56 45 45 89 ~ ~ 73 78 31 22 ~ 60.00 89.00 21.00
5 ~ ~ ~ 19 26 27 62 ~ ~ ~ 45 46 26 26 40 ~ ~ 36 51 46 55 24 ~ ~ 24 46 62 31 53 ~ ~ 39.21 62.00 19.00
6 53 68 32 31 71 ~ ~ 28 57 32 32 42 ~ ~ 50 38 39 49 27 ~ ~ 43 32 50 60 49 ~ ~ 46 47 ~ 44.36 71.00 22.00
7 48 53 37 ~ ~ ~ 46 39 37 40 ~ ~ 38 33 51 46 35 ~ ~ 72 99 91 86 100 ~ ~ 74 89 9.00 12 7.00 51.91 100.00 22.00
8 ~ ~ 19 36 30 49 51 ~ ~ 133 188 47 26 46 ~ ~ 52 103 66 89 22 ~ ~ 28 33 17 10 30 ~ ~ 73 54.67 188.00 21.00
9 101 56 62 55 ~ ~ 78 68 45 48 46 ~ ~ 22 134 112 122 67 ~ ~ 58 65 41 24 99 ~ ~ 85 86 56 ~ 69.55 134.00 22.00
10 20 34 ~ ~ 44 54 45 37 114 ~ ~ 75 50 38 51 75 ~ ~ 57 36 43 81 86 ~ ~ 38 17 ~ 33 148 ~ 56.00 148.00 21.00
11 ~ 36 74 74 86 68 ~ ~ 129 140 54 59 57 ~ ~ 40 42 106 90 35 ~ ~ 238 266 87 89 89 ~ ~ 127 ~ 94.57 266.00 21.00
12 64 123 195 91 ~ ~ 59 48 90 31 68 ~ ~ 75 111 172 142 93 ~ ~ 90 120 156 ~ ~ ~ ~ 77 90 67 36 95.14 195.00 21.00

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. 3 30 17 7 5 0 0 0 62 59 29 12 5 0 0 0 177
REL. 4.8 48.3 27.4 11.2 8.0 0.0 0.0 0.0 100.0 95.2 46.8 19.4 8.1 0.0 0.0 0.027.1
ID 4 48 27 22 40 0 0 0 143
ABS. 17 33 12 0 0 0 0 0 62 45 12 0 0 0 0 0 89
REL. 27.4 53.2 19.3 0.0 0.0 0.0 0.0 0.0 100.0 72.6 19.4 0.0 0.0 0.0 0.0 0.0 24.4
ID 27 53 19 0 0 0 0 0 100
ABS. 15 28 15 6 1 0 0 0 65 50 22 7 1 0 0 0 188
REL. 23.0 43.0 23.0 9.2 1.5 0.0 0.0 0.0100.0 76.9 33.8 10.8 1.5 0.0 0.0 0.0 11.8
ID 23 43 23 18 7 0 0 0 115
ABS. 4 23 21 10 3 2 0 0 63 59 36 15 5 2 0 0 266
REL 6.3 36.5 33.3 15.8 4.7 3.1 0.0 0.0100.0 93.7 57.1 23.8 7.9 3.2 0.0 0.024.11
ID 6 36 33 31 23 79 0 0 211
Year
ABS. 39 114 65 23 9 2 0 0 252 213 99 34 11 2 0 0 266
REL. 15.4 45.2 25.7 9.1 3.5 0.7 0.0 0.0100.0 84.5 39.3 13.5 4.4 0.8 0.0 0.024.11
ID 15 45 25 18 17 19 0 0 142

Note:

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