Detailed overview of ambient air pollution valuis from individual stations


Year: 1999
Pollutant:NOx-nitrogen oxides(oxides of nitrogen)
Station: 617 - Litomerice-OHS
Code:CZLTHSLOH
Institution:Public Health Service
Region:Severocesky
District:Litomerice
IHd: 100
Measure method:chemiluminescence
Unit:ug/m^3

Average daily concentrations

Day/
Month

12345678910111213141516171819202122232425262728293031XMaxN
1 25 31 49 113 159 325 83 63 31 24 47 47 72 53 42 94 51 99 65 66 61 68 67 82 58 72 75 48 24 27 48 69.97 325.00 31.00
2 86 126 69 39 15 20 34 50 95 155 72 23 21 36 83 44 20 54 84 90 41 40 29 42 55 115 97 72 ~ ~ ~ 60.96 155.00 28.00
3 41 79 77 51 64 41 62 65 78 50 31 76 45 53 34 31 51 72 60 25 32 43 39 95 122 64 19 19 37 68 64 54.45 122.00 31.00
4 68 51 38 38 42 46 49 34 45 46 32 29 33 26 36 28 25 44 57 62 54 50 39 26 23 43 34 31 43 46 ~ 40.60 68.00 30.00
5 30 28 30 16 18 23 23 39 50 35 30 32 31 38 14 27 26 20 19 22 26 24 32 29 32 25 40 37 23 27 28 28.19 50.00 31.00
6 22 27 31 30 19 20 34 37 29 22 24 17 18 17 24 22 25 26 19 17 22 18 23 37 29 23 21 32 32 27 ~ 24.80 37.00 30.00
7 30 31 18 15 18 22 22 27 14 11 14 21 23 32 31 25 24 29 34 37 27 27 27 18 23 27 19 23 29 31 24 24.29 37.00 31.00
8 27 34 47 42 41 36 33 24 32 38 30 27 35 24 21 34 39 39 30 30 18 19 37 55 39 27 27 19 32 36 51 33.00 55.00 31.00
9 25 32 42 26 21 40 40 63 67 52 31 48 63 68 62 57 40 28 23 27 51 55 57 46 47 33 42 60 46 38 ~ 44.33 68.00 30.00
10 32 46 24 35 66 44 52 44 27 35 45 49 97 54 66 36 27 43 66 41 32 35 35 37 101 113 48 86 100 85 61 53.61 113.00 31.00
11 190 75 68 99 111 53 60 73 54 48 52 60 43 32 65 45 68 53 62 50 48 55 80 167 243 185 91 117 70 75 ~ 83.07 243.00 30.00
12 37 33 58 33 28 44 32 80 128 94 52 32 41 56 43 59 60 51 51 69 84 96 75 35 42 42 63 42 74 59 57 56.45 128.00 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. 18 40 25 4 2 0 1 0 90 72 32 7 3 1 1 0 325
REL. 20.0 44.4 27.7 4.4 2.2 0.0 1.1 0.0 100.0 80.0 35.6 7.8 3.3 1.1 1.1 0.06.1
ID 20 44 27 8 11 0 138 0 251
ABS. 61 29 1 0 0 0 0 0 91 30 1 0 0 0 0 0 68
REL. 67.0 31.8 1.0 0.0 0.0 0.0 0.0 0.0 100.0 33.0 1.1 0.0 0.0 0.0 0.0 0.0 1.4
ID 67 31 1 0 0 0 0 0 100
ABS. 54 36 2 0 0 0 0 0 92 38 2 0 0 0 0 0 68
REL. 58.6 39.1 2.1 0.0 0.0 0.0 0.0 0.0100.0 41.3 2.2 0.0 0.0 0.0 0.0 0.0 14.9
ID 58 39 2 0 0 0 0 0 100
ABS. 11 52 20 5 3 1 0 0 92 81 29 9 4 1 0 0 243
REL 11.9 56.5 21.7 5.4 3.2 1.0 0.0 0.0100.0 88.0 31.5 9.8 4.3 1.1 0.0 0.025.11
ID 11 56 21 10 16 27 0 0 144
Year
ABS. 144 157 48 9 5 1 1 0 365 221 64 16 7 2 1 0 325
REL. 39.4 43.0 13.1 2.4 1.3 0.2 0.2 0.0100.0 60.5 17.5 4.4 1.9 0.5 0.3 0.0 6.1
ID 39 43 13 4 6 6 34 0 148

Note:

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