Detailed overview of ambient air pollution valuis from individual stations

Year: 1999
Pollutant:NOx-nitrogen oxides(oxides of nitrogen)
Station: 788 - Libis
Code:CZMESNLIB
Institution:Spolana Neratovice a.s.
Region:Stredocesky
District:Melnik
IHd: 100
Measure method:chemiluminescence
Unit:ug/m^3

Average daily concentrations

Day/
Month

12345678910111213141516171819202122232425262728293031XMaxN
1 13 15 19 22 33 50 26 27 20 53 29 25 29 20 17 33 34 52 29 24 30 50 37 32 25 26 37 28 14 13 21 28.48 52.54 31.00
2 43 41 36 28 ~ 21 15 23 102 77 51 15 11 19 36 19 13 19 38 35 15 15 13 17 20 32 34 25 ~ ~ ~ 30.10 101.60 27.00
3 14 24 33 37 37 22 23 23 32 32 17 42 23 21 19 18 29 47 33 12 16 23 17 35 42 42 43 16 18 43 44 28.23 46.71 31.00
4 39 41 38 22 19 22 21 20 27 25 16 15 20 12 15 17 13 17 27 36 23 34 ~ ~ 14 26 25 20 26 35 ~ 23.78 41.02 28.00
5 94 95 29 28 54 30 13 17 20 21 17 16 18 22 11 16 19 16 18 28 17 23 17 29 23 19 32 30 25 23 18 27.04 95.06 31.00
6 20 38 18 18 18 20 17 19 19 46 21 16 13 14 15 20 23 17 15 14 15 10 13 20 25 18 18 17 24 20 ~ 19.36 45.75 30.00
7 20 26 29 21 16 14 15 16 13 15 33 31 20 17 17 18 20 27 ~ 17 18 18 23 15 22 ~ 15 13 17 26 18 19.60 32.75 29.00
8 21 28 30 26 26 21 19 26 25 15 15 17 27 17 11 15 16 17 14 15 12 18 31 29 28 10 23 16 16 25 27 20.51 30.62 31.00
9 16 17 30 22 16 15 21 34 35 34 34 38 32 50 44 32 21 21 ~ 12 24 24 26 31 26 24 20 34 15 22 ~ 26.50 50.29 29.00
10 13 16 15 17 ~ 20 21 22 13 14 14 31 38 22 31 21 24 65 75 70 25 17 16 40 35 32 ~ ~ 32 21 16 27.68 74.56 28.00
11 32 ~ 68 61 45 30 28 40 39 25 31 ~ 35 22 49 45 37 27 48 40 42 45 45 87 114 101 50 62 47 43 ~ 47.76 114.06 28.00
12 28 25 22 21 ~ ~ 20 30 47 113 ~ 14 22 29 29 ~ ~ 24 25 37 49 86 59 ~ 35 26 49 28 33 32 ~ 36.78 112.93 24.00

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. 62 25 1 1 0 0 0 0 89 27 2 1 0 0 0 0 102
REL. 69.6 28.0 1.1 1.1 0.0 0.0 0.0 0.0 100.0 30.3 2.2 1.1 0.0 0.0 0.0 0.09.2
ID 69 28 1 2 0 0 0 0 101
ABS. 78 9 2 0 0 0 0 0 89 11 2 0 0 0 0 0 95
REL. 87.6 10.1 2.2 0.0 0.0 0.0 0.0 0.0 100.0 12.4 2.2 0.0 0.0 0.0 0.0 0.0 2.5
ID 87 10 2 0 0 0 0 0 100
ABS. 81 8 0 0 0 0 0 0 89 8 0 0 0 0 0 0 50
REL. 91.0 8.9 0.0 0.0 0.0 0.0 0.0 0.0100.0 9.0 0.0 0.0 0.0 0.0 0.0 0.0 14.9
ID 91 8 0 0 0 0 0 0 100
ABS. 45 27 5 3 0 0 0 0 80 35 8 3 0 0 0 0 114
REL 56.2 33.7 6.2 3.7 0.0 0.0 0.0 0.0100.0 43.8 10.0 3.8 0.0 0.0 0.0 0.025.11
ID 56 33 6 7 0 0 0 0 103
Year
ABS. 266 69 8 4 0 0 0 0 347 81 12 4 0 0 0 0 114
REL. 76.6 19.8 2.3 1.1 0.0 0.0 0.0 0.0100.0 23.3 3.5 1.2 0.0 0.0 0.0 0.025.11
ID 76 19 2 2 0 0 0 0 101

Note:

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