Detailed overview of ambient air pollution valuis from individual stations

Year: 2000
Pollutant:NOx-nitrogen oxides(oxides of nitrogen)
Station:1321 - Plzen-stred
Code:CZPMPZPST
Institution:Plzen City
Region:Zapadocesky
District:Plzen-mesto
IHd: 100
Measure method:chemiluminescence
Unit:ug/m^3

Average daily concentrations

Day/
Month

12345678910111213141516171819202122232425262728293031XMaxN
1 46 33 43 43 145 88 107 76 66 64 ~ ~ ~ 84 77 42 56 43 51 72 51 62 50 107 96 97 98 83 ~ ~ ~ 71.33 145.46 25.00
2 ~ 64 78 75 74 163 77 45 45 78 98 47 35 74 69 53 68 76 60 47 120 100 135 67 60 92 138 120 49 ~ ~ 78.82 162.99 28.00
3 67 48 41 29 36 71 56 52 39 63 35 48 121 55 48 45 64 52 63 92 84 135 120 73 58 45 42 59 42 ~ ~ 61.42 134.97 29.00
4 63 80 55 65 47 45 42 33 34 42 64 80 49 56 37 62 54 ~ 100 98 95 34 22 34 58 41 42 40 30 29 ~ 52.82 100.42 29.00
5 54 40 45 63 41 29 31 ~ 65 64 53 23 26 37 59 63 50 41 40 23 30 31 51 66 40 29 12 11 41 23 55 41.15 65.74 30.00
6 66 55 18 32 24 30 52 29 25 23 ~ 30 23 ~ 26 21 11 38 58 82 92 37 35 22 30 44 42 50 58 83 ~ 40.47 91.74 28.00
7 27 24 37 33 20 22 30 21 17 34 39 56 37 44 29 50 54 71 47 54 38 30 56 53 71 47 ~ 40 26 26 55 39.65 71.50 30.00
8 69 43 34 43 27 41 55 69 66 55 46 40 75 76 79 77 73 65 46 62 36 46 50 55 57 25 62 71 65 63 60 55.83 78.94 31.00
9 54 25 36 49 61 52 68 70 63 59 94 134 ~ 56 61 34 49 51 49 51 64 73 35 49 69 85 106 42 47 46 ~ 59.69 134.48 29.00
10 40 88 60 68 47 73 48 41 105 69 64 69 104 54 46 131 89 86 94 54 49 66 70 138 88 70 67 78 55 174 75 76.10 173.58 31.00
11 130 114 64 65 78 68 228 219 209 111 90 61 101 108 142 116 64 94 124 129 98 216 74 110 68 39 132 241 89 90 ~ 115.82 240.61 30.00
12 64 63 68 80 62 45 55 127 182 76 168 148 ~ ~ ~ ~ ~ ~ ~ 90 66 77 93 111 49 56 55 103 138 65 61 87.62 182.29 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. 2 42 27 10 1 0 0 0 82 80 38 11 1 0 0 0 163
REL. 2.4 51.2 32.9 12.1 1.2 0.0 0.0 0.0 100.0 97.6 46.3 13.4 1.2 0.0 0.0 0.06.2
ID 2 51 32 24 6 0 0 0 117
ABS. 29 50 7 1 0 0 0 0 87 58 8 1 0 0 0 0 100
REL. 33.3 57.4 8.0 1.1 0.0 0.0 0.0 0.0 100.0 66.7 9.2 1.1 0.0 0.0 0.0 0.0 19.4
ID 33 57 8 2 0 0 0 0 101
ABS. 14 58 16 2 0 0 0 0 90 76 18 2 0 0 0 0 134
REL. 15.5 64.4 17.7 2.2 0.0 0.0 0.0 0.0100.0 84.4 20.0 2.2 0.0 0.0 0.0 0.0 12.9
ID 15 64 17 4 0 0 0 0 102
ABS. 0 28 29 20 3 5 0 0 85 85 57 28 8 5 0 0 241
REL 0.0 32.9 34.1 23.5 3.5 5.8 0.0 0.0100.0 100.0 67.1 32.9 9.4 5.9 0.0 0.028.11
ID 0 32 34 47 17 147 0 0 278
Year
ABS. 45 178 79 33 4 5 0 0 344 299 121 42 9 5 0 0 241
REL. 13.0 51.7 22.9 9.5 1.1 1.4 0.0 0.0100.0 86.9 35.2 12.2 2.6 1.5 0.0 0.028.11
ID 13 51 22 19 5 36 0 0 149

Note:

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