Detailed overview of ambient air pollution valuis from individual stations

778 - PHA7-Vystaviste

Year: 1997
Pollutant:NOx-nitrogen oxides(oxides of nitrogen)
Station: 778 - PHA7-Vystaviste
Code:CZ07CMVYS
Institution:CHMI
Region:Hlavni mesto Praha
District:Praha 7
IHd: 100
Measure method:chemiluminescence
Unit:ug/m^3

Average daily concentrations

Day/
Month

12345678910111213141516171819202122232425262728293031XMaxN
1 96 136 99 94 60 75 97 188 125 130 83 57 158 275 268 244 222 179 100 187 198 ~ 155 179 115 67 170 64 62 52 38 132.32 274.51 30.00
2 53 132 159 116 70 ~ 210 156 146 111 49 48 27 44 29 40 118 89 45 44 31 79 120 107 33 30 46 80 ~ ~ ~ 81.99 210.27 27.00
3 132 47 58 91 109 121 99 122 102 166 139 148 63 44 27 40 46 72 49 43 63 40 51 80 86 90 44 18 22 28 64 74.34 166.06 31.00
4 92 80 64 19 26 17 39 81 114 67 24 19 62 31 14 17 37 29 22 34 57 40 52 82 36 53 55 51 27 19 ~ 45.35 113.51 30.00
5 38 42 37 44 40 35 40 27 31 40 60 29 35 62 56 52 34 30 40 55 29 23 23 22 31 33 16 17 18 13 23 34.68 62.27 31.00
6 29 44 37 63 42 54 37 28 26 46 41 61 29 19 18 25 36 40 31 24 20 39 22 25 57 50 36 22 26 17 ~ 34.84 63.26 30.00
7 25 36 26 20 14 8.41 10 10 21 29 39 30 33 48 26 39 28 18 10 12 20 33 59 48 27 15 19 31 42 33 34 27.14 58.77 31.00
8 25 28 44 49 33 23 26 27 24 32 38 43 50 46 24 22 24 49 47 56 75 55 43 37 66 69 72 47 24 29 45 41.05 74.81 31.00
9 76 63 42 62 62 32 23 18 12 25 59 79 22 35 73 89 68 103 33 33 63 118 77 46 78 84 37 90 112 40 ~ 58.44 118.07 30.00
10 30 10 19 27 68 151 128 93 29 28 16 21 35 31 39 68 99 97 107 87 55 155 64 22 15 22 44 83 158 114 72 64.09 158.15 31.00
11 101 100 52 68 102 131 251 98 78 172 121 106 48 68 59 32 31 43 73 167 208 89 118 ~ ~ ~ 102 112 126 89 ~ 101.62 250.95 27.00
12 48 57 62 26 50 ~ ~ 89 137 76 72 29 15 29 39 55 46 56 101 ~ ~ 120 112 50 27 28 30 49 42 110 95 61.14 137.49 27.00

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. 9 27 18 18 11 5 0 0 88 79 52 34 16 5 0 0 275
REL. 10.2 30.6 20.4 20.4 12.5 5.6 0.0 0.0 100.0 89.8 59.1 38.6 18.2 5.7 0.0 0.014.1
ID 10 30 20 40 62 142 0 0 306
ABS. 41 44 5 1 0 0 0 0 91 50 6 1 0 0 0 0 114
REL. 45.0 48.3 5.4 1.0 0.0 0.0 0.0 0.0 100.0 54.9 6.6 1.1 0.0 0.0 0.0 0.0 9.4
ID 45 48 5 2 0 0 0 0 101
ABS. 42 35 12 3 0 0 0 0 92 50 15 3 0 0 0 0 118
REL. 45.6 38.0 13.0 3.2 0.0 0.0 0.0 0.0100.0 54.3 16.3 3.3 0.0 0.0 0.0 0.0 22.9
ID 45 38 13 6 0 0 0 0 103
ABS. 21 20 19 18 5 2 0 0 85 64 44 25 7 2 0 0 251
REL 24.7 23.5 22.3 21.1 5.8 2.3 0.0 0.0100.0 75.3 51.8 29.4 8.2 2.4 0.0 0.0 7.11
ID 24 23 22 42 29 58 0 0 201
Year
ABS. 113 126 54 40 16 7 0 0 356 243 117 63 23 7 0 0 275
REL. 31.7 35.3 15.1 11.2 4.4 1.9 0.0 0.0100.0 68.3 32.9 17.7 6.5 2.0 0.0 0.0 14.1
ID 31 35 15 22 22 49 0 0 176

Note:

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

Detailed overview of ambient air pollution valuis from individual stations - selection station