Detailed overview of ambient air pollution valuis from individual stations

Year: 2001
Pollutant:NOx-nitrogen oxides(oxides of nitrogen)
Station:1321 - Plzen-stred
Code:CZPMPZPST
Institution:Plzen City
Region:Plzensky
District:Plzen-mesto
IHd: 100
Measure method:chemiluminescence
Unit:ug/m^3

Average daily concentrations

Day/
Month

12345678910111213141516171819202122232425262728293031XMaxN
1 48 82 152 140 300 48 61 114 110 136 91 183 89 84 88 101 53 62 58 59 69 62 93 92 136 182 46 144 252 200 91 110.46 299.93 31.00
2 85 66 76 121 51 139 201 78 87 67 98 236 111 166 301 328 57 46 67 55 67 48 56 36 55 101 73 95 ~ ~ ~ 105.93 328.22 28.00
3 119 74 54 43 64 66 80 80 126 55 32 47 ~ 51 80 180 ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ 46 86 68 75.12 179.83 18.00
4 98 112 100 45 71 68 47 50 83 98 54 36 35 28 26 45 75 51 49 44 26 40 52 61 33 87 88 45 43 68 ~ 58.59 111.89 30.00
5 54 46 87 63 51 44 52 57 53 79 57 31 42 37 43 54 45 48 46 58 43 43 52 67 54 35 39 54 45 39 36 50.20 87.49 31.00
6 37 21 17 40 54 76 44 38 28 32 47 71 59 57 77 49 48 62 74 62 54 37 29 46 56 43 52 45 63 26 ~ 48.07 76.67 30.00
7 30 37 35 35 17 21 17 23 61 50 36 31 52 31 22 41 50 49 75 50 32 51 60 ~ 49 71 51 26 44 77 60 42.76 77.14 30.00
8 38 33 33 21 41 29 66 52 42 46 28 38 61 79 38 57 30 24 54 51 49 77 56 67 52 73 40 52 38 53 71 48.06 79.36 31.00
9 37 30 63 49 45 48 41 29 27 44 41 49 41 64 31 32 70 84 58 59 57 58 32 70 76 90 109 62 52 51 ~ 53.26 108.71 30.00
10 52 107 99 67 76 61 68 94 109 91 135 167 114 68 65 90 67 88 103 36 77 80 75 113 92 119 78 73 72 97 87 87.74 166.91 31.00
11 54 71 96 57 131 64 56 50 95 71 102 78 146 199 171 203 64 40 104 177 117 60 73 72 57 129 95 73 69 76 ~ 95.02 203.11 30.00
12 28 30 43 138 92 79 87 49 76 119 196 83 49 68 142 68 108 84 86 84 49 52 42 38 20 34 40 37 39 36 55 69.43 195.91 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. 1 26 25 13 5 5 2 0 77 76 50 25 12 7 2 0 328
REL. 1.2 33.7 32.4 16.8 6.4 6.4 2.5 0.0 100.0 98.7 64.9 32.5 15.6 9.1 2.6 0.016.2
ID 1 33 32 33 32 162 324 0 620
ABS. 10 63 17 1 0 0 0 0 91 81 18 1 0 0 0 0 112
REL. 10.9 69.2 18.6 1.0 0.0 0.0 0.0 0.0 100.0 89.0 19.8 1.1 0.0 0.0 0.0 0.0 2.4
ID 10 69 18 2 0 0 0 0 101
ABS. 23 55 12 1 0 0 0 0 91 68 13 1 0 0 0 0 109
REL. 25.2 60.4 13.1 1.0 0.0 0.0 0.0 0.0100.0 74.7 14.3 1.1 0.0 0.0 0.0 0.0 27.9
ID 25 60 13 2 0 0 0 0 101
ABS. 3 27 39 17 5 1 0 0 92 89 62 23 6 1 0 0 203
REL 3.2 29.3 42.3 18.4 5.4 1.0 0.0 0.0100.0 96.7 67.4 25.0 6.5 1.1 0.0 0.016.11
ID 3 29 42 36 27 27 0 0 166
Year
ABS. 37 171 93 32 10 6 2 0 351 314 143 50 18 8 2 0 328
REL. 10.5 48.7 26.4 9.1 2.8 1.7 0.5 0.0100.0 89.5 40.7 14.2 5.1 2.3 0.6 0.0 16.2
ID 10 48 26 18 14 42 71 0 232

Note:

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