Detailed overview of ambient air pollution valuis from individual stations

Year: 1999
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 ~ ~ ~ 93 85 103 39 62 ~ ~ 55 52 ~ 60 35 ~ ~ 79 164 112 87 91 ~ ~ 60 72 91 122 130 ~ ~ 83.79 164.00 19.00
2 96 ~ ~ ~ ~ ~ ~ 100 72 69 124 44 ~ ~ ~ 77 70 60 95 ~ ~ 31 41 34 34 ~ ~ ~ ~ ~ ~ 67.64 124.00 14.00
3 61 48 113 131 86 ~ ~ 162 252 230 132 281 ~ ~ 225 203 241 151 ~ ~ ~ 109 99 186 184 ~ ~ ~ 187 132 260 165.38 281.00 21.00
4 117 ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ 114 88 18 96 92 ~ ~ 97 44 95 71 83 ~ 83.18 117.00 11.00
5 ~ ~ 45 26 14 30 11 ~ ~ ~ ~ 40 54 38 ~ ~ 18 18 24 32 18 ~ ~ 145 90 124 11 59 ~ ~ 26 43.32 145.00 19.00
6 101 43 81 57 ~ ~ 69 86 79 195 55 ~ ~ 77 60 61 33 35 ~ ~ ~ 31 55 61 38 ~ ~ ~ 76 64 ~ 67.85 195.00 20.00
7 110 ~ ~ ~ ~ ~ 190 ~ 62 ~ ~ 111 109 118 123 127 ~ ~ 43 54 68 38 105 ~ ~ 38 66 73 117 82 ~ 90.78 190.00 18.00
8 ~ 61 158 137 40 ~ ~ ~ ~ 111 88 156 83 ~ ~ 69 64 16 21 10 ~ ~ 86 92 57 65 54 ~ ~ 94 108 78.50 158.00 20.00
9 ~ 120 119 ~ ~ 37 46 39 15 42 ~ ~ 51 97 121 65 67 ~ ~ 26 ~ ~ ~ 85 ~ ~ 36 48 53 36 ~ 61.28 121.00 18.00
10 ~ ~ ~ 133 ~ 92 19 15 ~ ~ 45 38 54 39 80 ~ ~ 54 68 34 30 48 ~ ~ 41 36 9.00 ~ 11 ~ ~ 47.00 133.00 18.00
11 86 47 79 78 ~ ~ ~ ~ 74 45 50 43 ~ ~ 115 56 52 61 51 ~ ~ 84 82 87 41 61 ~ ~ 115 179 ~ 74.30 179.00 20.00
12 114 100 84 ~ ~ 38 27 30 32 34 ~ ~ 42 31 19 12 26 ~ ~ 45 32 ~ 72 ~ ~ ~ 86 77 50 85 60 52.19 114.00 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. 1 14 16 10 6 7 0 0 541 53 39 23 13 7 0 0 281
REL. 1.8 25.9 29.6 18.5 11.1 12.9 0.0 0.0 100.0 98.1 72.2 42.6 24.1 13.0 0.0 0.012.3
ID 1 25 29 37 55 324 0 0 474
ABS. 14 16 14 5 1 0 0 0 501 36 20 6 1 0 0 0 195
REL. 28.0 32.0 28.0 10.0 2.0 0.0 0.0 0.0 100.0 72.0 40.0 12.0 2.0 0.0 0.0 0.0 10.6
ID 28 32 28 20 10 0 0 0 118
ABS. 5 22 12 14 3 0 0 0 561 51 29 17 3 0 0 0 190
REL. 8.9 39.2 21.4 25.0 5.3 0.0 0.0 0.0100.0 91.1 51.8 30.4 5.4 0.0 0.0 0.0 7.7
ID 8 39 21 50 26 0 0 0 146
ABS. 13 25 16 4 1 0 0 0 591 46 21 5 1 0 0 0 179
REL 22.0 42.3 27.1 6.7 1.6 0.0 0.0 0.0100.0 78.0 35.6 8.5 1.7 0.0 0.0 0.030.11
ID 22 42 27 13 8 0 0 0 113
Year
ABS. 33 77 58 33 11 7 0 0 2191 186 109 51 18 7 0 0 281
REL. 15.0 35.1 26.4 15.0 5.0 3.1 0.0 0.0100.0 84.9 49.8 23.3 8.2 3.2 0.0 0.0 12.3
ID 15 35 26 30 25 79 0 0 211

Note:

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