Detailed overview of ambient air pollution valuis from individual stations

Year: 1998
Pollutant:NOx-nitrogen oxides(oxides of nitrogen)
Station: 954 - Drahotuse
Code:CZPRCMDRA
Institution:CHMI
Region:Severomoravsky
District:Prerov
IHd: 100
Measure method:guajacol (modif. Jakobs-Hochheiser) - spectrophotometry
Unit:ug/m^3

Average daily concentrations

Day/
Month

12345678910111213141516171819202122232425262728293031XMaxN
1 ~ ~ ~ ~ ~ ~ ~ 37 29 30 23 16 18 18 95 47 36 27 22 60 29 37 46 45 53 57 78 45 104 53 51 44.00 104.00 24.00
2 123 30 85 142 177 109 52 79 73 111 164 31 38 28 42 35 86 77 102 83 53 67 65 51 72 94 17 15 ~ ~ ~ 75.04 177.00 28.00
3 35 30 21 12 17 24 16 26 43 47 59 41 27 23 33 18 47 60 43 24 31 21 48 40 57 27 61 40 40 41 42 35.29 61.00 31.00
4 50 46 30 16 32 34 17 31 36 9.00 14 7.00 23 41 11 20 26 18 38 51 31 44 28 27 25 33 13 32 34 31 ~ 28.27 51.00 30.00
5 14 14 29 21 26 31 31 24 24 34 30 39 34 31 25 20 28 34 31 38 19 22 20 31 29 33 40 19 29 22 26 27.35 40.00 31.00
6 ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ 36 39 29 47 43 23 29 27 22 ~ 32.78 47.00 9.00
7 19 33 25 ~ 9.00 23 25 32 33 34 20 27 9.00 25 38 21 10 21 24 36 27 15 36 31 20 33 17 38 23 51 21 25.87 51.00 30.00
8 27 33 22 31 36 34 36 29 27 45 41 37 23 29 21 30 38 29 37 39 16 14 33 17 35 27 38 27 23 22 32 29.94 45.00 31.00
9 26 37 30 37 21 17 22 22 20 18 26 10 18 12 13 17 27 22 15 18 23 33 25 35 26 20 27 34 36 34 ~ 24.03 37.00 30.00
10 32 34 19 32 29 29 23 41 27 14 13 15 25 22 26 29 17 32 39 41 30 81 39 40 52 55 19 14 14 13 16 29.42 81.00 31.00
11 14 57 38 36 42 23 70 94 67 48 148 162 79 31 53 70 40 28 63 38 14 55 92 141 128 143 148 97 63 50 ~ 71.07 162.00 30.00
12 43 95 78 60 33 14 28 71 49 100 144 42 33 110 145 142 136 84 49 47 107 108 83 15 17 26 28 50 88 82 23 68.71 145.00 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. 29 35 11 6 2 0 0 0 83 54 19 8 2 0 0 0 177
REL. 34.9 42.1 13.2 7.2 2.4 0.0 0.0 0.0 100.0 65.1 22.9 9.6 2.4 0.0 0.0 0.05.2
ID 34 42 13 14 12 0 0 0 116
ABS. 51 19 0 0 0 0 0 0 70 19 0 0 0 0 0 0 51
REL. 72.8 27.1 0.0 0.0 0.0 0.0 0.0 0.0 100.0 27.1 0.0 0.0 0.0 0.0 0.0 0.0 20.4
ID 72 27 0 0 0 0 0 0 100
ABS. 68 23 0 0 0 0 0 0 91 23 0 0 0 0 0 0 51
REL. 74.7 25.2 0.0 0.0 0.0 0.0 0.0 0.0100.0 25.3 0.0 0.0 0.0 0.0 0.0 0.0 30.7
ID 74 25 0 0 0 0 0 0 100
ABS. 36 27 16 12 1 0 0 0 92 56 29 13 1 0 0 0 162
REL 39.1 29.3 17.3 13.0 1.0 0.0 0.0 0.0100.0 60.9 31.5 14.1 1.1 0.0 0.0 0.012.11
ID 39 29 17 26 5 0 0 0 117
Year
ABS. 184 104 27 18 3 0 0 0 336 152 48 21 3 0 0 0 177
REL. 54.7 30.9 8.0 5.3 0.8 0.0 0.0 0.0100.0 45.2 14.3 6.3 0.9 0.0 0.0 0.0 5.2
ID 54 30 8 10 4 0 0 0 108

Note:

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