Detailed overview of ambient air pollution valuis from individual stations

Year: 2001
Pollutant:NOx-nitrogen oxides(oxides of nitrogen)
Station:1137 - Pha1-Narodni muzeum
Code:CZ01HSNAR
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 ~ 76 282 ~ 99 ~ ~ 107 146 ~ 229 135 ~ ~ 203 56 30 83 36 ~ ~ 62 51 37 73 113 ~ ~ 95 71 73 102.85 282.00 20.00
2 70 57 ~ ~ 107 155 193 209 156 ~ ~ 99 51 49 155 164 ~ ~ 71 149 207 161 176 ~ ~ 44 65 40 ~ ~ ~ 118.90 209.00 20.00
3 26 131 ~ ~ 37 51 230 124 168 ~ ~ 169 98 ~ 39 ~ ~ ~ 254 169 120 161 136 ~ ~ 104 201 56 108 152 ~ 126.70 254.00 20.00
4 ~ 76 55 52 43 76 ~ ~ 88 101 74 40 69 ~ ~ ~ 72 89 101 55 ~ ~ 80 44 68 107 51 ~ ~ 57 ~ 69.90 107.00 20.00
5 ~ 30 23 56 ~ ~ 59 ~ 113 80 26 ~ ~ 29 21 13 21 31 ~ ~ 76 88 103 86 34 ~ ~ 43 56 56 28 51.05 113.00 21.00
6 18 ~ ~ 23 28 36 14 14 ~ ~ 46 18 42 45 33 ~ ~ 18 ~ 15 12 13 ~ ~ 11 52 50 13 21 ~ ~ 26.10 52.00 20.00
7 ~ 47 52 74 ~ ~ ~ ~ 28 26 31 13 46 ~ ~ 112 80 65 26 40 ~ ~ 62 48 18 28 31 ~ ~ 37 13 43.85 112.00 20.00
8 68 57 40 ~ ~ 47 51 23 21 37 ~ ~ 23 13 18 13 34 ~ ~ 45 55 44 15 21 ~ ~ 32 35 23 ~ 22 33.50 68.00 22.00
9 ~ ~ 52 41 38 49 24 ~ ~ 64 50 59 55 57 ~ ~ 81 78 62 54 52 ~ ~ 56 74 96 74 ~ ~ ~ ~ 58.74 96.00 19.00
10 102 86 65 65 31 ~ ~ 111 116 22 56 116 ~ ~ 53 96 16 101 90 ~ ~ 63 62 87 ~ 62 ~ ~ ~ ~ ~ 73.68 116.00 19.00
11 ~ ~ ~ ~ 117 83 49 148 103 ~ ~ 217 132 130 113 118 ~ ~ 73 62 69 62 131 ~ ~ 89 147 107 105 53 ~ 105.40 217.00 20.00
12 ~ ~ 64 61 62 60 46 ~ ~ 73 53 106 68 ~ ~ ~ 149 83 159 110 ~ ~ ~ ~ ~ ~ 173 59 ~ ~ 70 87.25 173.00 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. 2 15 11 12 12 8 0 0 60 58 43 32 20 8 0 0 282
REL. 3.3 25.0 18.3 20.0 20.0 13.3 0.0 0.0 100.0 96.7 71.7 53.3 33.3 13.3 0.0 0.03.1
ID 3 25 18 40 100 333 0 0 520
ABS. 23 20 13 5 0 0 0 0 61 38 18 5 0 0 0 0 113
REL. 37.7 32.7 21.3 8.1 0.0 0.0 0.0 0.0 100.0 62.3 29.5 8.2 0.0 0.0 0.0 0.0 9.5
ID 37 32 21 16 0 0 0 0 108
ABS. 21 31 8 1 0 0 0 0 61 40 9 1 0 0 0 0 112
REL. 34.4 50.8 13.1 1.6 0.0 0.0 0.0 0.0100.0 65.6 14.8 1.6 0.0 0.0 0.0 0.0 16.7
ID 34 50 13 3 0 0 0 0 101
ABS. 3 18 12 19 2 1 0 0 551 52 34 22 3 1 0 0 217
REL 5.4 32.7 21.8 34.5 3.6 1.8 0.0 0.0100.0 94.5 61.8 40.0 5.5 1.8 0.0 0.012.11
ID 5 32 21 69 18 45 0 0 192
Year
ABS. 49 84 44 37 14 9 0 0 2371 188 104 60 23 9 0 0 282
REL. 20.6 35.4 18.5 15.6 5.9 3.7 0.0 0.0100.0 79.3 43.9 25.3 9.7 3.8 0.0 0.0 3.1
ID 20 35 18 31 29 94 0 0 230

Note:

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