Detailed overview of ambient air pollution valuis from individual stations

Year: 1998
Pollutant:NOx-nitrogen oxides(oxides of nitrogen)
Station: 780 - Pha9-Vysocany
Code:CZ09CMVYS
Institution:CHMI
Region:Hlavni mesto Praha
District:Praha 9
IHd: 100
Measure method:chemiluminescence
Unit:ug/m^3

Average daily concentrations

Day/
Month

12345678910111213141516171819202122232425262728293031XMaxN
1 58 71 22 22 33 45 62 39 47 233 139 68 67 125 220 72 33 36 57 52 37 48 53 50 66 271 208 103 114 64 74 83.45 271.45 31.00
2 49 90 59 133 ~ ~ ~ ~ 85 194 117 53 48 39 47 44 89 186 117 119 99 94 211 89 157 121 40 21 ~ ~ ~ 95.84 210.92 24.00
3 24 33 34 26 20 26 15 13 29 63 31 33 21 16 33 43 47 62 38 26 16 24 32 43 57 64 53 54 31 48 114 37.78 114.24 31.00
4 136 62 36 18 50 50 22 56 43 19 29 12 77 34 38 78 29 24 29 70 72 43 33 35 22 14 15 24 16 15 ~ 40.10 136.42 30.00
5 11 17 32 28 41 42 87 26 21 41 33 91 22 24 32 16 28 56 48 36 38 21 29 34 35 37 33 18 16 18 29 33.52 91.16 31.00
6 91 66 81 33 25 16 21 69 69 33 37 ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ 49.28 91.29 11.00
7 ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ 39 28 19 80 59 32 48 50 30 23 19 35 34 28 24 54 37.82 79.79 16.00
8 18 15 52 32 38 55 56 63 26 48 100 47 48 47 31 28 59 37 64 73 32 20 24 30 34 37 32 28 24 43 74 42.37 100.24 31.00
9 69 37 25 33 21 62 46 41 36 33 66 26 45 24 38 56 58 56 ~ ~ ~ ~ ~ ~ ~ ~ ~ 54 137 59 ~ 48.60 136.69 21.00
10 33 39 36 25 42 37 60 89 91 25 29 55 89 63 120 155 34 87 87 71 55 98 51 35 32 57 31 20 30 25 18 55.52 155.20 31.00
11 16 51 38 36 41 63 166 95 158 224 61 87 67 38 62 90 46 53 78 48 35 56 154 275 62 101 148 116 50 73 ~ 86.29 274.92 30.00
12 38 72 62 59 38 25 39 54 199 155 126 91 28 82 ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ 76.22 198.97 14.00

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. 22 35 11 10 3 5 0 0 86 64 29 18 8 5 0 0 271
REL. 25.5 40.6 12.7 11.6 3.4 5.8 0.0 0.0 100.0 74.4 33.7 20.9 9.3 5.8 0.0 0.026.1
ID 25 40 12 23 17 145 0 0 265
ABS. 37 24 10 1 0 0 0 0 72 35 11 1 0 0 0 0 136
REL. 51.3 33.3 13.8 1.3 0.0 0.0 0.0 0.0 100.0 48.6 15.3 1.4 0.0 0.0 0.0 0.0 1.4
ID 51 33 13 2 0 0 0 0 101
ABS. 27 35 4 2 0 0 0 0 68 41 6 2 0 0 0 0 137
REL. 39.7 51.4 5.8 2.9 0.0 0.0 0.0 0.0100.0 60.3 8.8 2.9 0.0 0.0 0.0 0.0 29.9
ID 39 51 5 5 0 0 0 0 102
ABS. 13 33 16 5 6 2 0 0 75 62 29 13 8 2 0 0 275
REL 17.3 44.0 21.3 6.6 8.0 2.6 0.0 0.0100.0 82.7 38.7 17.3 10.7 2.7 0.0 0.024.11
ID 17 44 21 13 40 66 0 0 202
Year
ABS. 99 127 41 18 9 7 0 0 301 202 75 34 16 7 0 0 275
REL. 32.8 42.1 13.6 5.9 2.9 2.3 0.0 0.0100.0 67.1 24.9 11.3 5.3 2.3 0.0 0.024.11
ID 32 42 13 11 14 58 0 0 173

Note:

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