Detailed overview of ambient air pollution valuis from individual stations

Year: 2001
Pollutant:NOx-nitrogen oxides(oxides of nitrogen)
Station: 430 - Pha1-Rytirska
Code:CZ01HSRYT
Institution:Public Health Service
Region:Prague
District:Praha 1
IHd: 100
Measure method:trithanolamine spectophotometry
Unit:ug/m^3

Average daily concentrations

Day/
Month

12345678910111213141516171819202122232425262728293031XMaxN
1 ~ 77 137 192 132 ~ ~ 237 125 73 86 124 ~ ~ 137 129 77 111 84 ~ ~ 75 76 82 90 139 ~ ~ 98 50 62 108.77 237.00 22.00
2 57 61 ~ ~ 51 129 131 192 139 ~ ~ 251 105 116 148 147 ~ ~ 56 32 121 81 152 ~ ~ 48 103 123 ~ ~ ~ 112.15 251.00 20.00
3 112 94 ~ ~ 52 107 149 118 122 ~ ~ 47 72 87 146 163 ~ ~ 57 62 57 105 95 ~ ~ 77 20 31 66 128 ~ 89.41 163.00 22.00
4 ~ 102 105 98 70 69 ~ ~ 39 52 41 18 30 ~ ~ ~ 72 68 91 62 ~ ~ 50 98 56 64 72 ~ ~ 56 ~ 65.65 105.00 20.00
5 ~ 44 31 31 ~ ~ 25 ~ 57 73 69 ~ ~ 83 42 43 32 48 ~ ~ 28 71 78 83 58 ~ ~ 38 35 41 43 50.14 83.00 21.00
6 32 ~ ~ 24 32 75 52 49 ~ ~ 60 111 79 91 75 ~ ~ 46 29 102 80 22 ~ ~ 42 50 77 42 41 ~ ~ 57.67 111.00 21.00
7 ~ 36 21 38 ~ ~ ~ ~ 52 68 54 36 35 ~ ~ 25 62 53 62 29 ~ ~ 49 71 30 59 53 ~ ~ 67 45 47.25 71.00 20.00
8 27 15 24 ~ ~ 27 34 16 42 46 ~ ~ ~ 42 39 62 41 ~ ~ 76 76 39 33 56 ~ ~ 45 19 50 45 47 40.95 76.00 22.00
9 ~ ~ 31 42 43 72 30 ~ ~ 31 28 39 53 57 ~ ~ 42 47 54 39 27 ~ ~ 31 41 17 41 ~ ~ ~ ~ 40.26 72.00 19.00
10 40 42 46 47 67 ~ ~ 50 66 100 60 108 ~ ~ 115 151 95 68 94 ~ ~ 71 59 54 ~ 77 ~ ~ 34 40 33 68.95 151.00 22.00
11 40 29 ~ ~ 31 46 23 31 ~ ~ ~ ~ ~ ~ 43 153 ~ ~ 25 40 93 97 76 ~ ~ 327 182 76 77 84 ~ 81.83 327.00 18.00
12 ~ ~ 89 95 157 71 ~ ~ ~ 133 99 75 77 47 ~ ~ 57 57 52 52 34 ~ ~ ~ ~ ~ 34 53 ~ ~ 26 71.06 157.00 17.00

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 13 16 26 4 2 0 0 64 61 48 32 6 2 0 0 251
REL. 4.6 20.3 25.0 40.6 6.2 3.1 0.0 0.0 100.0 95.3 75.0 50.0 9.4 3.1 0.0 0.012.2
ID 4 20 25 81 31 78 0 0 240
ABS. 12 26 20 4 0 0 0 0 62 50 24 4 0 0 0 0 111
REL. 19.3 41.9 32.2 6.4 0.0 0.0 0.0 0.0 100.0 80.6 38.7 6.5 0.0 0.0 0.0 0.0 12.6
ID 19 41 32 12 0 0 0 0 106
ABS. 18 37 6 0 0 0 0 0 61 43 6 0 0 0 0 0 76
REL. 29.5 60.6 9.8 0.0 0.0 0.0 0.0 0.0100.0 70.5 9.8 0.0 0.0 0.0 0.0 0.0 20.8
ID 29 60 9 0 0 0 0 0 100
ABS. 7 23 19 3 4 0 1 0 571 50 27 8 5 1 1 0 327
REL 12.2 40.3 33.3 5.2 7.0 0.0 1.7 0.0100.0 87.7 47.4 14.0 8.8 1.8 1.8 0.026.11
ID 12 40 33 10 35 0 219 0 350
Year
ABS. 40 99 61 33 8 2 1 0 244 204 105 44 11 3 1 0 327
REL. 16.3 40.5 25.0 13.5 3.2 0.8 0.4 0.0100.0 83.6 43.0 18.0 4.5 1.2 0.4 0.026.11
ID 16 40 25 27 16 20 51 0 197

Note:

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