Detailed overview of ambient air pollution valuis from individual stations

Year: 1999
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 ~ ~ ~ 49 90 105 48 51 ~ ~ 55 45 24 54 63 ~ ~ 197 145 136 69 76 ~ ~ 50 82 102 59 63 ~ ~ 78.15 197.00 20.00
2 71 152 99 43 40 ~ ~ 90 69 78 40 37 ~ ~ 70 34 48 36 65 ~ ~ 38 31 23 25 83 ~ ~ ~ ~ ~ 58.60 152.00 20.00
3 39 37 106 133 78 ~ ~ 55 82 69 44 95 ~ ~ 142 110 98 90 78 ~ ~ 78 62 103 169 85 ~ ~ 53 88 173 89.87 173.00 23.00
4 185 67 ~ ~ ~ 57 73 73 ~ ~ ~ 87 54 58 46 64 ~ ~ 40 55 56 99 92 ~ ~ 67 65 75 94 65 ~ 73.60 185.00 20.00
5 ~ ~ 56 40 40 43 42 ~ ~ 48 38 40 41 34 ~ ~ 27 35 70 49 45 ~ ~ 65 78 45 44 90 ~ ~ 42 48.19 90.00 21.00
6 46 62 47 27 ~ ~ 44 20 23 25 51 ~ ~ 44 50 93 60 28 ~ ~ 43 15 32 58 54 ~ ~ 62 71 69 ~ 46.55 93.00 22.00
7 80 49 ~ ~ ~ ~ 23 23 27 ~ ~ 79 32 72 34 70 ~ ~ 79 47 23 48 42 ~ ~ 29 72 53 174 ~ ~ 55.58 174.00 19.00
8 ~ 98 70 122 67 70 ~ ~ 82 67 60 55 85 ~ ~ 65 59 76 50 50 ~ ~ 172 34 102 71 70 ~ ~ 58 77 75.45 172.00 22.00
9 49 60 74 ~ ~ 66 83 99 97 114 ~ ~ 35 97 89 56 39 ~ ~ 25 60 52 42 94 ~ ~ 61 162 131 56 ~ 74.59 162.00 22.00
10 47 ~ ~ 48 44 26 24 30 ~ ~ 30 65 67 154 185 ~ ~ 111 97 62 48 51 ~ ~ 84 62 35 ~ 53 ~ ~ 66.15 185.00 20.00
11 147 118 89 118 150 ~ ~ 63 40 66 38 69 ~ ~ 55 101 127 52 52 ~ ~ 92 105 112 148 111 ~ ~ 96 76 ~ 92.05 150.00 22.00
12 42 79 89 ~ ~ 65 43 34 120 95 ~ ~ 37 42 36 21 41 ~ ~ 62 101 124 81 ~ ~ ~ 138 62 84 61 98 70.68 138.00 22.00

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. 4 25 21 9 4 0 0 0 63 59 34 13 4 0 0 0 197
REL. 6.3 39.6 33.3 14.2 6.3 0.0 0.0 0.0 100.0 93.7 54.0 20.6 6.3 0.0 0.0 0.018.1
ID 6 39 33 28 31 0 0 0 139
ABS. 8 39 15 0 1 0 0 0 63 55 16 1 1 0 0 0 185
REL. 12.6 61.9 23.8 0.0 1.5 0.0 0.0 0.0 100.0 87.3 25.4 1.6 1.6 0.0 0.0 0.0 1.4
ID 12 61 23 0 7 0 0 0 106
ABS. 7 25 24 4 3 0 0 0 63 56 31 7 3 0 0 0 174
REL. 11.1 39.6 38.0 6.3 4.7 0.0 0.0 0.0100.0 88.9 49.2 11.1 4.8 0.0 0.0 0.0 29.7
ID 11 39 38 12 23 0 0 0 125
ABS. 5 28 14 15 2 0 0 0 64 59 31 17 2 0 0 0 185
REL 7.8 43.7 21.8 23.4 3.1 0.0 0.0 0.0100.0 92.2 48.4 26.6 3.1 0.0 0.0 0.015.10
ID 7 43 21 46 15 0 0 0 135
Year
ABS. 24 117 74 28 10 0 0 0 253 229 112 38 10 0 0 0 197
REL. 9.4 46.2 29.2 11.0 3.9 0.0 0.0 0.0100.0 90.5 44.3 15.0 4.0 0.0 0.0 0.0 18.1
ID 9 46 29 22 19 0 0 0 126

Note:

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