Detailed overview of ambient air pollution valuis from individual stations

Year: 2002
Pollutant:NOx-nitrogen oxides(oxides of nitrogen)
Station: 773 - Pha4-Branik
Code:CZ04CMBRA
Institution:Czech Hydrometeorological Institute
Region:Prague
District:Praha 4
IHd: 100
Measure method:chemiluminescence
Unit:ug/m^3

Average daily concentrations

Day/
Month

12345678910111213141516171819202122232425262728293031XMaxN
1 27 28 114 134 109 77 206 200 65 71 75 85 96 123 91 68 119 79 45 33 63 95 101 52 69 30 37 43 56 120 123 85.04 205.79 31.00
2 92 164 191 153 100 168 116 54 32 29 43 46 99 55 69 68 135 87 49 37 44 32 26 29 78 46 ~ ~ ~ ~ ~ 78.51 190.79 26.00
3 73 43 49 162 178 79 36 113 53 74 141 204 145 44 66 55 114 99 59 75 76 35 20 23 38 52 72 125 143 98 97 85.21 204.02 31.00
4 97 71 40 51 37 23 68 98 66 47 63 62 49 47 88 82 95 62 73 40 45 91 57 55 65 46 22 57 53 110 ~ 61.83 109.74 30.00
5 87 64 80 31 44 49 56 28 32 39 43 60 98 49 61 85 37 33 38 75 74 47 36 59 26 50 43 72 37 67 ~ 53.38 98.06 30.00
6 ~ ~ ~ ~ ~ ~ 59 34 45 37 50 52 44 63 31 44 58 80 47 40 32 31 22 46 49 56 46 33 27 43 ~ 44.48 79.96 24.00
7 70 56 40 35 30 17 44 92 61 45 71 64 31 22 34 64 56 51 47 50 49 62 63 54 53 49 48 61 64 60 46 51.14 91.76 31.00
8 75 65 43 33 46 42 38 56 69 29 25 32 21 28 35 42 44 82 69 98 57 83 104 55 86 50 52 99 81 67 45 56.48 103.81 31.00
9 45 77 95 98 68 61 64 118 89 77 81 73 61 29 39 65 61 57 100 117 61 56 36 29 54 61 29 42 65 114 ~ 67.42 117.70 30.00
10 109 101 77 70 28 29 43 58 60 49 38 30 53 76 87 140 78 57 42 85 116 118 56 93 52 25 19 38 103 153 123 71.18 152.71 31.00
11 105 37 46 59 41 76 144 61 23 66 90 149 140 121 251 220 88 127 88 103 103 102 70 137 233 179 101 91 103 63 ~ 107.32 251.12 30.00
12 211 148 92 98 57 48 38 36 71 84 205 71 60 58 63 84 125 73 250 193 210 92 59 44 28 32 58 83 56 57 41 91.17 250.14 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. 10 27 26 16 6 3 0 0 88 78 51 25 9 3 0 0 206
REL. 11.3 30.6 29.5 18.1 6.8 3.4 0.0 0.0 100.0 88.6 58.0 28.4 10.2 3.4 0.0 0.07.1
ID 11 30 29 36 34 85 0 0 227
ABS. 13 52 18 1 0 0 0 0 84 71 19 1 0 0 0 0 110
REL. 15.4 61.9 21.4 1.1 0.0 0.0 0.0 0.0 100.0 84.5 22.6 1.2 0.0 0.0 0.0 0.0 30.4
ID 15 61 21 2 0 0 0 0 101
ABS. 13 54 21 4 0 0 0 0 92 79 25 4 0 0 0 0 118
REL. 14.1 58.6 22.8 4.3 0.0 0.0 0.0 0.0100.0 85.9 27.2 4.3 0.0 0.0 0.0 0.0 8.9
ID 14 58 22 8 0 0 0 0 104
ABS. 8 31 22 21 3 7 0 0 92 84 53 31 10 7 0 0 251
REL 8.6 33.6 23.9 22.8 3.2 7.6 0.0 0.0100.0 91.3 57.6 33.7 10.9 7.6 0.0 0.015.11
ID 8 33 23 45 16 190 0 0 318
Year
ABS. 44 164 87 42 9 10 0 0 356 312 148 61 19 10 0 0 251
REL. 12.3 46.0 24.4 11.7 2.5 2.8 0.0 0.0100.0 87.6 41.6 17.1 5.3 2.8 0.0 0.015.11
ID 12 46 24 23 12 70 0 0 189

Note:

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