Detailed overview of ambient air pollution valuis from individual stations

Year: 1998
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 ~ 84 ~ ~ 66 83 93 81 104 ~ ~ 83 41 62 98 40 ~ ~ 90 61 58 62 53 ~ ~ 164 159 97 101 75 ~ 83.57 164.00 21.00
2 ~ 125 80 109 155 130 ~ ~ 142 113 ~ 88 71 ~ ~ 57 66 94 99 132 ~ ~ 110 113 116 69 56 ~ ~ ~ ~ 101.32 155.00 19.00
3 ~ 40 49 51 48 58 ~ ~ 60 82 73 65 62 ~ ~ 82 76 67 63 63 ~ ~ 53 87 123 ~ ~ ~ ~ 87 65 67.70 123.00 20.00
4 32 ~ 69 ~ ~ 65 66 48 77 ~ ~ ~ 56 71 70 60 ~ ~ ~ 67 ~ 200 17 97 ~ ~ ~ 34 25 ~ ~ 65.87 200.00 16.00
5 ~ ~ ~ 66 34 89 134 ~ ~ ~ 97 93 62 51 35 ~ ~ 19 28 84 45 30 ~ ~ 57 ~ ~ 152 ~ ~ ~ 67.25 152.00 16.00
6 68 130 120 40 68 ~ ~ 8.00 25 10 49 41 ~ ~ 45 23 37 28 11 ~ ~ 55 40 70 73 48 ~ ~ 74 53 ~ 50.73 130.00 22.00
7 ~ 112 78 ~ ~ ~ 72 64 49 49 ~ ~ 32 52 63 52 38 ~ ~ 69 64 76 ~ 61 ~ ~ 71 36 111 85 75 65.45 112.00 20.00
8 ~ ~ 61 30 65 38 45 ~ ~ ~ 198 ~ 81 101 ~ ~ 50 44 ~ 62 ~ ~ ~ ~ ~ ~ 58 49 ~ ~ 105 70.50 198.00 14.00
9 ~ 94 70 53 ~ ~ 57 12 58 48 52 ~ ~ 128 69 55 67 80 ~ ~ 58 ~ ~ ~ 59 ~ ~ 63 70 43 ~ 63.11 128.00 18.00
10 ~ ~ ~ ~ 61 43 70 46 115 ~ ~ 67 46 59 49 50 ~ ~ 96 55 ~ 74 107 ~ ~ 113 77 ~ 17 47 ~ 66.22 115.00 18.00
11 ~ ~ 142 171 139 205 ~ ~ 167 168 69 93 64 ~ ~ 78 13 85 114 84 ~ ~ 241 ~ ~ ~ ~ ~ ~ 152 ~ 124.06 241.00 16.00
12 ~ ~ 179 128 ~ ~ 221 200 ~ 92 58 ~ ~ 113 146 194 378 ~ ~ ~ 77 199 ~ ~ ~ ~ ~ ~ ~ ~ ~ 165.42 378.00 12.00

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. 0 23 22 12 3 0 0 0 60 60 37 15 3 0 0 0 164
REL. 0.0 38.3 36.6 20.0 5.0 0.0 0.0 0.0 100.0 100.0 61.7 25.0 5.0 0.0 0.0 0.026.1
ID 0 38 36 40 25 0 0 0 140
ABS. 12 22 15 3 2 0 0 0 541 42 20 5 2 0 0 0 200
REL. 22.2 40.7 27.7 5.5 3.7 0.0 0.0 0.0 100.0 77.8 37.0 9.3 3.7 0.0 0.0 0.0 22.4
ID 22 40 27 11 18 0 0 0 120
ABS. 3 29 14 5 1 0 0 0 521 49 20 6 1 0 0 0 198
REL. 5.7 55.7 26.9 9.6 1.9 0.0 0.0 0.0100.0 94.2 38.5 11.5 1.9 0.0 0.0 0.0 11.8
ID 5 55 26 19 9 0 0 0 117
ABS. 2 11 12 9 8 3 1 0 461 44 33 21 12 4 1 0 378
REL 4.3 23.9 26.0 19.5 17.3 6.5 2.1 0.0100.0 95.7 71.7 45.7 26.1 8.7 2.2 0.017.12
ID 4 23 26 39 86 163 271 0 615
Year
ABS. 17 85 63 29 14 3 1 0 2121 195 110 47 18 4 1 0 378
REL. 8.0 40.0 29.7 13.6 6.6 1.4 0.4 0.0100.0 92.0 51.9 22.2 8.5 1.9 0.5 0.017.12
ID 8 40 29 27 33 35 58 0 232

Note:

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