Detailed overview of ambient air pollution valuis from individual stations


Year: 1998
Pollutant:NOx-nitrogen oxides(oxides of nitrogen)
Station:1014 - Decin
Code:CZDCCMDEC
Institution:CHMI
Region:Severocesky
District:Decin
IHd: 100
Measure method:chemiluminescence
Unit:ug/m^3

Average daily concentrations

Day/
Month

12345678910111213141516171819202122232425262728293031XMaxN
1 87 50 48 27 33 33 112 58 35 107 71 74 69 83 104 193 79 29 70 72 25 23 22 32 35 58 140 145 131 71 32 69.32 193.22 31.00
2 30 62 67 99 135 322 75 77 172 194 162 27 45 120 73 70 62 112 67 76 81 103 62 109 76 107 50 21 ~ ~ ~ 94.85 321.68 28.00
3 25 36 37 35 20 43 33 15 45 58 41 62 42 34 50 60 47 46 29 32 22 25 59 63 69 74 79 86 58 61 89 47.50 88.79 31.00
4 106 86 56 36 35 80 31 43 50 32 51 22 35 62 46 62 47 32 36 71 83 64 49 69 49 26 20 38 25 50 ~ 49.72 106.29 30.00
5 31 26 34 20 51 72 66 47 42 35 44 43 26 30 40 24 23 51 48 43 34 21 24 40 45 41 48 32 23 25 28 37.22 71.92 31.00
6 35 37 56 42 38 23 18 27 43 31 25 18 15 24 52 48 37 37 53 32 34 32 29 46 39 41 34 32 39 34 ~ 34.96 55.92 30.00
7 44 34 24 14 13 22 27 31 35 41 33 34 32 34 48 34 43 34 30 52 35 42 34 30 22 31 43 39 34 28 37 33.42 51.56 31.00
8 30 16 28 37 37 37 46 41 26 38 54 28 31 31 25 23 37 45 33 44 34 24 21 24 47 49 37 39 22 36 58 34.73 57.95 31.00
9 50 66 31 26 25 47 58 98 33 40 44 48 43 36 45 73 64 51 45 45 39 49 52 64 74 63 103 103 117 52 ~ 56.12 117.33 30.00
10 37 37 29 29 34 42 89 62 81 49 50 72 66 115 106 89 63 40 85 90 62 108 124 63 65 76 46 24 39 35 58 63.39 124.38 31.00
11 50 83 122 84 50 48 89 93 129 191 76 98 55 76 93 52 38 51 62 36 44 140 193 130 81 101 102 110 67 48 ~ 86.35 192.72 30.00
12 39 89 81 70 63 24 35 62 190 205 82 82 60 164 292 58 217 213 67 50 74 169 74 51 45 39 36 31 96 72 14 91.74 292.26 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. 20 29 24 12 4 0 1 0 90 70 41 17 5 1 1 0 322
REL. 22.2 32.2 26.6 13.3 4.4 0.0 1.1 0.0 100.0 77.8 45.6 18.9 5.6 1.1 1.1 0.06.2
ID 22 32 26 26 22 0 138 0 268
ABS. 32 52 6 1 0 0 0 0 91 59 7 1 0 0 0 0 106
REL. 35.1 57.1 6.5 1.0 0.0 0.0 0.0 0.0 100.0 64.8 7.7 1.1 0.0 0.0 0.0 0.0 1.4
ID 35 57 6 2 0 0 0 0 101
ABS. 31 55 3 3 0 0 0 0 92 61 6 3 0 0 0 0 117
REL. 33.6 59.7 3.2 3.2 0.0 0.0 0.0 0.0100.0 66.3 6.5 3.3 0.0 0.0 0.0 0.0 29.9
ID 33 59 3 6 0 0 0 0 103
ABS. 6 39 27 11 5 4 0 0 92 86 47 20 9 4 0 0 292
REL 6.5 42.3 29.3 11.9 5.4 4.3 0.0 0.0100.0 93.5 51.1 21.7 9.8 4.3 0.0 0.015.12
ID 6 42 29 23 27 108 0 0 238
Year
ABS. 89 175 60 27 9 4 1 0 365 276 101 41 14 5 1 0 322
REL. 24.3 47.9 16.4 7.3 2.4 1.0 0.2 0.0100.0 75.6 27.7 11.2 3.8 1.4 0.3 0.0 6.2
ID 24 47 16 14 12 27 34 0 177

Note:

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