Detailed overview of ambient air pollution valuis from individual stations

Year: 2000
Pollutant:NOx-nitrogen oxides(oxides of nitrogen)
Station:1137 - Pha1-Narodni muzeum
Code:CZ01HSNAR
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 ~ ~ 99 84 201 237 375 ~ ~ 101 74 61 42 72 ~ ~ 34 31 29 34 36 ~ ~ 91 110 169 145 ~ ~ ~ ~ 106.58 375.00 19.00
2 ~ ~ 37 39 ~ ~ 127 ~ ~ 57 82 ~ ~ 47 80 84 58 72 ~ ~ 128 81 89 ~ 29 ~ ~ 16 43 ~ ~ 66.81 128.00 16.00
3 56 32 ~ ~ ~ ~ ~ ~ 72 123 ~ ~ 56 41 52 46 30 ~ ~ 78 51 140 147 109 ~ ~ 192 173 383 ~ 256 113.17 383.00 18.00
4 ~ ~ 62 62 39 46 36 ~ ~ 61 74 58 52 66 ~ ~ 134 30 89 92 76 ~ ~ ~ 87 117 63 74 ~ ~ ~ 69.37 134.00 19.00
5 ~ 32 30 67 79 ~ ~ ~ 48 70 61 23 ~ ~ ~ 65 50 45 51 ~ ~ 53 52 68 32 57 ~ ~ 63 40 ~ 51.89 79.00 19.00
6 58 53 ~ ~ 77 ~ 18 46 28 ~ ~ 62 41 78 43 36 ~ ~ 90 45 81 ~ 43 ~ ~ 114 92 77 136 94 ~ 65.60 136.00 20.00
7 ~ ~ ~ ~ ~ ~ ~ ~ ~ 78 69 48 14 ~ ~ ~ ~ ~ ~ 63 ~ ~ ~ 102 99 72 143 ~ ~ ~ 140 82.80 143.00 10.00
8 166 34 43 39 ~ ~ 10 148 124 163 100 ~ ~ 155 172 109 113 140 ~ ~ 62 49 56 102 31 ~ ~ ~ 177 84 77 97.91 177.00 22.00
9 102 ~ ~ ~ ~ ~ ~ ~ ~ ~ 152 92 63 51 33 ~ ~ 83 67 90 65 109 ~ ~ 54 55 81 125 84 ~ ~ 81.62 152.00 16.00
10 ~ 183 122 144 112 111 ~ ~ 95 62 55 40 94 ~ ~ 93 114 71 142 ~ ~ ~ 30 ~ 67 47 87 ~ ~ 97 61 91.35 183.00 20.00
11 75 ~ 94 ~ ~ 92 66 85 112 102 ~ ~ 136 104 ~ 36 ~ ~ ~ 68 138 237 249 159 ~ ~ 69 ~ ~ 83 ~ 112.06 249.00 17.00
12 64 ~ ~ 56 105 78 ~ ~ ~ ~ 92 167 187 96 128 ~ ~ 87 120 109 45 166 ~ ~ ~ ~ 227 ~ 51 ~ ~ 111.13 227.00 16.00

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. 6 17 13 9 3 3 2 0 531 47 30 17 8 5 2 0 383
REL. 11.3 32.0 24.5 16.9 5.6 5.6 3.7 0.0 100.0 88.7 56.6 32.1 15.1 9.4 3.8 0.029.3
ID 11 32 24 33 28 141 471 0 743
ABS. 7 30 17 4 0 0 0 0 581 51 21 4 0 0 0 0 136
REL. 12.0 51.7 29.3 6.8 0.0 0.0 0.0 0.0 100.0 87.9 36.2 6.9 0.0 0.0 0.0 0.0 29.6
ID 12 51 29 13 0 0 0 0 106
ABS. 4 13 13 12 6 0 0 0 481 44 31 18 6 0 0 0 177
REL. 8.3 27.0 27.0 25.0 12.5 0.0 0.0 0.0100.0 91.7 64.6 37.5 12.5 0.0 0.0 0.0 29.8
ID 8 27 27 50 62 0 0 0 175
ABS. 1 11 18 15 5 3 0 0 531 52 41 23 8 3 0 0 249
REL 1.8 20.7 33.9 28.3 9.4 5.6 0.0 0.0100.0 98.1 77.4 43.4 15.1 5.7 0.0 0.023.11
ID 1 20 33 56 47 141 0 0 301
Year
ABS. 18 71 61 40 14 6 2 0 2121 194 123 62 22 8 2 0 383
REL. 8.4 33.4 28.7 18.8 6.6 2.8 0.9 0.0100.0 91.5 58.0 29.2 10.4 3.8 0.9 0.0 29.3
ID 8 33 28 37 33 70 117 0 330

Note:

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