Detailed overview of ambient air pollution valuis from individual stations


Year: 1998
Pollutant:NOx-nitrogen oxides(oxides of nitrogen)
Station: 929 - Litvinov
Code:CZMOHSLIT
Institution:Public Health Service
Region:Severocesky
District:Most
IHd: 100
Measure method:chemiluminescence
Unit:ug/m^3

Average daily concentrations

Day/
Month

12345678910111213141516171819202122232425262728293031XMaxN
1 91 59 43 12 18 18 67 16 19 56 85 111 92 119 101 110 29 47 45 31 16 19 20 26 28 80 108 81 62 42 24 54.03 119.00 31.00
2 45 77 42 100 111 62 91 ~ 107 139 144 22 33 31 15 57 21 39 81 79 ~ 88 35 34 62 53 45 14 ~ ~ ~ 62.58 144.00 26.00
3 ~ 31 33 25 10 24 22 11 12 19 32 46 18 11 34 29 18 22 11 10 11 8.00 17 24 22 44 50 30 34 51 94 26.77 94.00 30.00
4 74 36 45 34 20 35 39 21 41 30 24 10 10 18 31 33 41 18 12 36 35 34 28 35 17 22 17 25 15 16 ~ 28.40 74.00 30.00
5 14 21 11 10 14 33 32 30 26 33 30 24 21 15 9.00 6.00 15 11 12 14 10 8.00 11 21 28 37 30 18 19 24 19 19.55 37.00 31.00
6 19 27 28 21 23 19 22 18 30 27 25 15 6.00 20 23 15 14 15 19 12 23 20 16 19 22 15 30 11 19 21 ~ 19.80 30.00 30.00
7 22 10 20 7.00 7.00 8.00 13 9.00 10 14 12 12 17 10 16 18 22 15 8.00 44 27 22 30 16 11 14 35 12 20 17 17 16.61 44.00 31.00
8 16 16 10 22 12 16 21 19 6.00 24 38 36 27 16 28 21 28 23 17 31 25 7.00 8.00 17 11 33 11 ~ 8.00 7.00 16 19.00 38.00 30.00
9 ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
10 24 33 17 22 20 ~ 20 48 54 27 17 29 15 43 25 41 37 12 47 25 47 68 54 30 18 21 23 10 13 11 22 29.10 68.00 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. 42 23 13 9 0 0 0 0 87 45 22 9 0 0 0 0 144
REL. 48.2 26.4 14.9 10.3 0.0 0.0 0.0 0.0 100.0 51.7 25.3 10.3 0.0 0.0 0.0 0.011.2
ID 48 26 14 20 0 0 0 0 110
ABS. 78 12 1 0 0 0 0 0 91 13 1 0 0 0 0 0 74
REL. 85.7 13.1 1.0 0.0 0.0 0.0 0.0 0.0 100.0 14.3 1.1 0.0 0.0 0.0 0.0 0.0 1.4
ID 85 13 1 0 0 0 0 0 100
ABS. 57 4 0 0 0 0 0 0 61 4 0 0 0 0 0 0 44
REL. 93.4 6.5 0.0 0.0 0.0 0.0 0.0 0.0100.0 6.6 0.0 0.0 0.0 0.0 0.0 0.0 20.7
ID 93 6 0 0 0 0 0 0 100
ABS. 21 8 1 0 0 0 0 0 301 9 1 0 0 0 0 0 68
REL 70.0 26.6 3.3 0.0 0.0 0.0 0.0 0.0100.0 30.0 3.3 0.0 0.0 0.0 0.0 0.022.10
ID 70 26 3 0 0 0 0 0 100
Year
ABS. 198 47 15 9 0 0 0 0 269 71 24 9 0 0 0 0 144
REL. 73.6 17.4 5.5 3.3 0.0 0.0 0.0 0.0100.0 26.4 8.9 3.3 0.0 0.0 0.0 0.0 11.2
ID 73 17 5 6 0 0 0 0 103

Note:

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