Detailed overview of ambient air pollution valuis from individual stations

Year: 1999
Pollutant:NOx-nitrogen oxides(oxides of nitrogen)
Station: 805 - Pha10-Vrsovice
Code:CZ10CMVRS
Institution:Czech Hydrometeorological Institute
Region:Hlavni mesto Praha
District:Praha 10
IHd: 100
Measure method:chemiluminescence
Unit:ug/m^3

Average daily concentrations

Day/
Month

12345678910111213141516171819202122232425262728293031XMaxN
1 51 73 74 83 167 295 103 117 67 58 85 88 96 71 68 106 105 190 196 119 91 152 78 68 69 100 118 100 41 36 70 101.16 295.15 31.00
2 109 155 193 ~ ~ ~ ~ ~ 198 257 107 52 53 71 109 86 67 92 123 105 65 83 75 102 81 153 110 72 ~ ~ ~ 109.53 257.29 23.00
3 50 91 189 225 132 91 81 104 134 ~ 84 156 82 66 48 66 136 157 77 49 53 75 74 193 202 140 87 51 54 120 130 106.54 225.10 30.00
4 154 95 77 52 79 86 70 52 55 45 58 66 47 55 41 35 41 45 55 83 71 86 87 60 66 89 58 62 71 83 ~ 67.49 154.28 30.00
5 42 46 66 43 46 55 64 57 62 49 48 47 57 58 26 58 46 43 46 43 44 29 37 64 49 58 63 51 33 34 23 47.95 65.95 31.00
6 41 48 40 36 41 20 36 48 60 41 41 38 21 29 33 61 45 32 ~ 28 45 38 48 72 38 24 28 49 48 44 ~ 40.35 71.94 29.00
7 43 36 23 ~ ~ ~ ~ 34 20 13 26 49 42 39 48 39 28 41 45 44 35 37 26 21 47 27 26 39 43 51 33 35.35 50.72 27.00
8 50 56 74 62 65 ~ ~ ~ ~ 44 34 43 43 24 34 34 38 45 37 35 22 38 71 96 68 35 38 25 61 52 53 47.25 95.62 27.00
9 36 71 74 33 41 48 72 74 95 87 49 69 69 109 80 67 50 28 28 45 76 61 68 62 53 45 59 ~ 48 79 ~ 61.28 109.38 29.00
10 40 41 33 63 74 60 72 58 26 41 59 67 133 71 54 35 61 92 ~ 73 56 70 66 53 96 77 55 86 113 112 51 66.31 133.01 30.00
11 146 111 100 127 214 65 54 81 49 57 53 91 55 33 117 86 75 74 79 75 149 93 84 124 120 241 74 138 88 106 ~ 98.60 241.01 30.00
12 57 59 55 41 41 57 51 76 71 96 48 23 59 68 69 63 60 65 63 93 77 149 140 44 42 34 82 57 ~ 62 69 65.68 149.33 30.00

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 15 31 22 12 4 0 0 84 84 69 38 16 4 0 0 295
REL. 0.0 17.8 36.9 26.1 14.2 4.7 0.0 0.0 100.0 100.0 82.1 45.2 19.0 4.8 0.0 0.06.1
ID 0 17 36 52 71 119 0 0 297
ABS. 12 64 13 0 1 0 0 0 90 78 14 1 1 0 0 0 154
REL. 13.3 71.1 14.4 0.0 1.1 0.0 0.0 0.0 100.0 86.7 15.6 1.1 1.1 0.0 0.0 0.0 1.4
ID 13 71 14 0 5 0 0 0 104
ABS. 16 49 17 1 0 0 0 0 83 67 18 1 0 0 0 0 109
REL. 19.2 59.0 20.4 1.2 0.0 0.0 0.0 0.0100.0 80.7 21.7 1.2 0.0 0.0 0.0 0.0 14.9
ID 19 59 20 2 0 0 0 0 101
ABS. 4 39 30 15 0 2 0 0 90 86 47 17 2 2 0 0 241
REL 4.4 43.3 33.3 16.6 0.0 2.2 0.0 0.0100.0 95.6 52.2 18.9 2.2 2.2 0.0 0.026.11
ID 4 43 33 33 0 55 0 0 170
Year
ABS. 32 167 91 38 13 6 0 0 347 315 148 57 19 6 0 0 295
REL. 9.2 48.1 26.2 10.9 3.7 1.7 0.0 0.0100.0 90.8 42.7 16.4 5.5 1.7 0.0 0.0 6.1
ID 9 48 26 21 18 43 0 0 167

Note:

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