Detailed overview of ambient air pollution valuis from individual stations

Year: 1999
Pollutant:NOx-nitrogen oxides(oxides of nitrogen)
Station: 486 - Cheb-ESKA
Code:CZCHHSCHS
Institution:Public Health Service
Region:Zapadocesky
District:Cheb
IHd: 100
Measure method:trithanolamine spectophotometry
Unit:ug/m^3

Average daily concentrations

Day/
Month

12345678910111213141516171819202122232425262728293031XMaxN
1 27 36 31 70 7.00 19 69 51 90 69 5.00 97 9.00 73 5.00 69 113 140 75 95 105 138 76 78 57 46 39 71 52 43 ~ 61.83 140.00 30.00
2 ~ 74 43 39 9.00 15 14 10 ~ 78 112 ~ 8.00 75 53 26 18 71 41 53 18 24 23 42 11 61 45 30 ~ ~ ~ 39.72 112.00 25.00
3 37 18 80 17 141 70 58 63 62 69 93 88 75 65 72 61 88 120 95 50 36 8.00 89 86 138 4.00 132 70 65 79 135 73.03 141.00 31.00
4 154 103 ~ 42 45 55 51 59 104 82 35 14 76 53 4.00 11 157 98 67 105 71 104 96 63 73 101 89 106 46 ~ ~ 73.71 157.00 28.00
5 ~ ~ ~ 60 12 57 7.00 91 ~ ~ 55 ~ 32 56 42 48 54 33 25 53 66 ~ 38 7.00 111 9.00 175 16 ~ 70 57 51.04 175.00 23.00
6 62 45 38 ~ 23 23 47 60 ~ 73 74 ~ 53 6.00 ~ ~ 4.00 152 10 8.00 55 73 77 53 ~ 41 33 41 51 58 ~ 48.33 152.00 24.00
7 67 4.00 36 62 27 41 64 73 78 32 41 65 38 40 35 74 67 75 ~ 67 34 35 53 36 ~ ~ 112 89 81 31 ~ 53.96 112.00 27.00
8 ~ 71 ~ ~ ~ ~ ~ 4.00 ~ ~ ~ 62 21 40 75 4.00 65 ~ ~ 32 37 13 117 53 194 14 137 15 139 71 86 62.50 194.00 20.00
9 97 16 62 36 23 13 61 88 113 88 51 50 116 103 105 250 73 11 47 42 20 69 89 74 58 29 78 38 30 32 ~ 65.40 250.00 30.00
10 21 22 27 17 106 56 52 64 41 65 36 123 113 100 135 93 69 59 96 86 16 25 32 36 47 ~ ~ ~ ~ ~ ~ 61.48 135.00 25.00
11 ~ 35 122 81 65 71 43 30 68 45 4.00 80 42 48 4.00 129 4.00 95 13 4.00 175 63 78 98 100 166 87 96 90 75 ~ 69.34 175.00 29.00
12 37 19 8.00 9.00 5.00 8.00 49 5.00 87 59 50 ~ 33 32 23 57 38 47 ~ 54 59 59 37 20 16 34 7.00 13 8.00 64 34 33.48 87.00 29.00

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. 23 24 29 10 0 0 0 0 86 63 39 10 0 0 0 0 141
REL. 26.7 27.9 33.7 11.6 0.0 0.0 0.0 0.0 100.0 73.3 45.3 11.6 0.0 0.0 0.0 0.05.3
ID 26 27 33 23 0 0 0 0 111
ABS. 18 32 14 7 4 0 0 0 75 57 25 11 4 0 0 0 175
REL. 24.0 42.6 18.6 9.3 5.3 0.0 0.0 0.0 100.0 76.0 33.3 14.7 5.3 0.0 0.0 0.0 27.5
ID 24 42 18 18 26 0 0 0 130
ABS. 19 27 21 8 1 1 0 0 77 58 31 10 2 1 0 0 250
REL. 24.6 35.0 27.2 10.3 1.2 1.2 0.0 0.0100.0 75.3 40.3 13.0 2.6 1.3 0.0 0.0 16.9
ID 24 35 27 20 6 32 0 0 146
ABS. 27 30 18 6 2 0 0 0 83 56 26 8 2 0 0 0 175
REL 32.5 36.1 21.6 7.2 2.4 0.0 0.0 0.0100.0 67.5 31.3 9.6 2.4 0.0 0.0 0.021.11
ID 32 36 21 14 12 0 0 0 116
Year
ABS. 87 113 82 31 7 1 0 0 321 234 121 39 8 1 0 0 250
REL. 27.1 35.2 25.5 9.6 2.1 0.3 0.0 0.0100.0 72.9 37.7 12.1 2.5 0.3 0.0 0.0 16.9
ID 27 35 25 19 10 7 0 0 125

Note:

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