Detailed overview of ambient air pollution valuis from individual stations

Year: 1999
Pollutant:NOx-nitrogen oxides(oxides of nitrogen)
Station:1005 - Most
Code:CZMOCMMOS
Institution:Czech Hydrometeorological Institute
Region:Severocesky
District:Most
IHd: 100
Measure method:chemiluminescence
Unit:ug/m^3

Average daily concentrations

Day/
Month

12345678910111213141516171819202122232425262728293031XMaxN
1 18 24 38 31 43 277 36 31 21 21 32 32 40 29 27 82 106 112 50 86 66 73 62 85 50 37 58 43 35 29 44 55.38 276.80 31.00
2 66 46 45 30 20 17 23 39 ~ ~ ~ ~ 51 ~ 76 37 28 29 70 41 31 26 26 30 30 83 84 39 ~ ~ ~ 42.06 83.62 23.00
3 ~ ~ ~ 83 55 42 43 ~ 94 66 25 118 53 64 28 34 83 120 44 17 21 29 28 56 108 98 36 22 63 88 74 58.97 119.90 27.00
4 74 66 70 27 30 34 21 37 53 29 21 22 22 41 29 29 14 33 56 85 70 70 46 36 45 36 30 52 60 58 ~ 43.21 85.06 30.00
5 27 36 34 17 16 17 26 32 60 31 27 25 34 21 10 35 20 15 29 27 64 26 45 60 31 49 55 28 39 33 25 32.03 63.93 31.00
6 36 30 44 23 19 19 60 34 36 24 31 36 19 25 23 39 29 17 18 16 16 13 20 ~ ~ ~ ~ 30 50 32 ~ 28.49 60.16 26.00
7 38 41 24 22 17 16 24 31 18 16 21 25 26 19 22 36 39 44 47 33 18 18 17 14 31 18 24 20 24 26 23 25.48 47.10 31.00
8 35 39 65 65 70 50 38 34 28 26 19 53 59 23 13 32 37 23 18 19 11 42 78 53 48 59 36 26 40 74 54 40.77 77.78 31.00
9 34 27 48 32 29 37 83 90 92 65 48 99 92 114 87 62 41 32 18 22 61 77 63 75 48 25 34 41 22 22 ~ 54.00 114.20 30.00
10 22 29 19 27 26 21 28 32 18 13 27 63 97 54 96 48 38 56 48 30 26 32 44 36 66 38 30 41 69 82 55 42.33 96.61 31.00
11 182 113 99 93 82 39 30 73 56 44 47 60 34 24 113 92 49 43 53 53 37 43 97 143 117 101 86 133 48 101 ~ 76.19 182.48 30.00
12 28 21 26 20 13 26 24 30 58 40 49 15 22 28 27 27 33 23 19 20 104 106 106 23 32 33 47 30 42 24 39 36.63 105.96 31.00

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. 29 32 14 5 0 1 0 0 81 52 20 6 1 1 0 0 277
REL. 35.8 39.5 17.2 6.1 0.0 1.2 0.0 0.0 100.0 64.2 24.7 7.4 1.2 1.2 0.0 0.06.1
ID 35 39 17 12 0 30 0 0 135
ABS. 50 32 5 0 0 0 0 0 87 37 5 0 0 0 0 0 85
REL. 57.4 36.7 5.7 0.0 0.0 0.0 0.0 0.0 100.0 42.5 5.7 0.0 0.0 0.0 0.0 0.0 20.4
ID 57 36 5 0 0 0 0 0 100
ABS. 44 36 11 1 0 0 0 0 92 48 12 1 0 0 0 0 114
REL. 47.8 39.1 11.9 1.0 0.0 0.0 0.0 0.0100.0 52.2 13.0 1.1 0.0 0.0 0.0 0.0 14.9
ID 47 39 11 2 0 0 0 0 101
ABS. 39 31 11 10 1 0 0 0 92 53 22 11 1 0 0 0 182
REL 42.3 33.6 11.9 10.8 1.0 0.0 0.0 0.0100.0 57.6 23.9 12.0 1.1 0.0 0.0 0.0 1.11
ID 42 33 11 21 5 0 0 0 115
Year
ABS. 162 131 41 16 1 1 0 0 352 190 59 18 2 1 0 0 277
REL. 46.0 37.2 11.6 4.5 0.2 0.2 0.0 0.0100.0 54.0 16.8 5.1 0.6 0.3 0.0 0.0 6.1
ID 46 37 11 9 1 7 0 0 112

Note:

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