Detailed overview of ambient air pollution valuis from individual stations

Year: 2000
Pollutant:NOx-nitrogen oxides(oxides of nitrogen)
Station: 805 - Pha10-Vrsovice
Code:CZ10CMVRS
Institution:Czech Hydrometeorological Institute
Region:Hlavni mesto Praha
District:Praha 10
IHd: 100
Measure method:chemiluminescence
Unit:ug/m^3

Average daily concentrations

Day/
Month

12345678910111213141516171819202122232425262728293031XMaxN
1 57 66 67 66 103 158 131 66 66 61 ~ ~ ~ 65 63 52 48 34 40 51 32 60 56 94 106 87 92 80 30 40 46 68.38 158.45 28.00
2 104 63 58 62 55 111 63 39 38 73 81 50 38 62 79 63 72 67 65 36 74 ~ 75 76 55 102 86 69 83 ~ ~ 67.69 110.72 28.00
3 60 48 43 30 35 69 48 39 33 52 30 58 95 60 43 47 47 52 47 ~ 50 118 125 124 92 48 33 48 49 78 61 58.72 125.34 30.00
4 66 63 67 101 44 35 31 51 54 48 96 75 47 89 50 66 56 90 74 93 95 65 45 36 60 93 62 44 58 63 ~ 63.85 101.46 30.00
5 55 62 69 95 77 51 34 58 74 92 66 41 42 60 71 69 63 74 67 37 41 65 69 64 50 52 44 42 53 40 46 58.85 94.91 31.00
6 62 49 43 53 60 67 65 63 47 42 37 62 52 61 57 35 27 39 56 59 68 44 69 38 42 39 42 40 56 58 ~ 51.05 69.35 30.00
7 47 84 65 60 33 46 52 47 36 57 84 ~ ~ 76 42 48 59 60 45 52 44 47 52 91 71 74 62 58 35 53 79 57.18 90.87 29.00
8 69 52 55 49 40 47 49 61 62 51 49 40 60 60 58 50 59 69 60 66 47 72 68 71 50 36 59 78 87 68 77 58.73 86.61 31.00
9 82 43 46 54 78 80 101 80 81 99 129 94 76 77 67 51 59 74 81 64 70 103 60 67 114 140 111 83 74 72 ~ 80.40 140.08 30.00
10 65 115 81 161 119 72 63 76 102 71 121 140 236 142 90 166 106 76 206 126 80 157 87 116 88 ~ ~ ~ ~ 97 91 112.97 235.98 27.00
11 89 121 152 76 115 61 158 167 141 123 47 26 33 32 34 124 81 82 194 106 153 284 305 181 77 59 97 131 168 90 ~ 116.95 305.21 30.00
12 78 64 120 142 78 66 80 147 182 93 111 94 62 60 58 40 76 124 157 216 108 141 83 94 94 127 81 112 166 86 78 103.79 216.25 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. 6 50 20 9 1 0 0 0 86 80 30 10 1 0 0 0 158
REL. 6.9 58.1 23.2 10.4 1.1 0.0 0.0 0.0 100.0 93.0 34.9 11.6 1.2 0.0 0.0 0.06.1
ID 6 58 23 20 5 0 0 0 115
ABS. 2 66 22 1 0 0 0 0 91 89 23 1 0 0 0 0 101
REL. 2.1 72.5 24.1 1.0 0.0 0.0 0.0 0.0 100.0 97.8 25.3 1.1 0.0 0.0 0.0 0.0 4.4
ID 2 72 24 2 0 0 0 0 101
ABS. 1 51 32 6 0 0 0 0 90 89 38 6 0 0 0 0 140
REL. 1.1 56.6 35.5 6.6 0.0 0.0 0.0 0.0100.0 98.9 42.2 6.7 0.0 0.0 0.0 0.0 26.9
ID 1 56 35 13 0 0 0 0 106
ABS. 3 12 30 25 13 4 1 0 88 85 73 43 18 5 1 0 305
REL 3.4 13.6 34.0 28.4 14.7 4.5 1.1 0.0100.0 96.6 83.0 48.9 20.5 5.7 1.1 0.023.11
ID 3 13 34 56 73 113 142 0 437
Year
ABS. 12 179 104 41 14 4 1 0 355 343 164 60 19 5 1 0 305
REL. 3.3 50.4 29.2 11.5 3.9 1.1 0.2 0.0100.0 96.6 46.2 16.9 5.4 1.4 0.3 0.023.11
ID 3 50 29 23 19 28 35 0 189

Note:

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