Detailed overview of ambient air pollution valuis from individual stations

Year: 2002
Pollutant:NOx-nitrogen oxides(oxides of nitrogen)
Station: 772 - Pha2-Riegrovy sady
Code:CZ02CMRIE
Institution:Czech Hydrometeorological Institute
Region:Prague
District:Praha 2
IHd: 100
Measure method:chemiluminescence
Unit:ug/m^3

Average daily concentrations

Day/
Month

12345678910111213141516171819202122232425262728293031XMaxN
1 27 30 78 123 159 89 129 141 43 58 56 77 78 131 57 40 77 50 40 24 36 53 50 41 38 20 24 23 31 55 49 62.15 158.72 31.00
2 43 64 76 82 59 118 62 34 23 18 23 26 48 49 63 48 91 50 32 24 33 28 24 24 50 21 29 30 ~ ~ ~ 45.38 117.76 28.00
3 46 31 33 75 132 70 ~ 50 40 31 52 144 99 33 49 43 109 60 38 46 43 28 20 21 30 33 54 128 163 90 87 62.46 163.16 30.00
4 90 78 37 44 31 21 33 52 46 38 45 36 38 33 46 47 53 51 49 33 29 57 46 41 37 27 18 24 28 53 ~ 42.10 89.64 30.00
5 41 43 41 26 28 39 31 23 28 24 37 ~ ~ 27 40 49 31 24 22 32 32 29 30 34 25 30 38 38 27 42 33 32.61 49.10 29.00
6 21 41 49 30 24 30 44 26 43 32 29 34 29 32 ~ ~ ~ 41 37 30 31 21 20 42 39 32 28 24 21 23 ~ 31.65 48.63 27.00
7 49 46 26 23 21 19 30 37 37 29 55 39 24 18 29 ~ ~ 25 32 23 21 24 29 28 33 29 40 42 38 42 41 32.03 54.61 29.00
8 55 69 37 27 34 41 34 39 63 19 24 24 16 27 28 30 46 40 37 38 30 74 109 48 47 33 37 66 73 81 37 43.96 109.00 31.00
9 29 31 36 53 46 55 62 34 42 50 39 53 58 25 21 36 38 46 74 96 67 54 31 26 42 49 29 37 68 132 ~ 48.62 132.37 30.00
10 82 66 54 45 19 18 31 43 47 37 32 25 51 60 48 95 46 35 30 61 93 88 29 52 33 17 17 26 53 99 81 48.81 98.83 31.00
11 73 36 40 74 42 56 92 50 26 52 67 65 80 134 189 187 53 146 60 74 63 79 58 75 164 128 80 42 73 55 ~ 80.46 189.05 30.00
12 58 74 89 ~ 64 50 41 40 76 88 113 59 65 59 57 93 108 58 115 217 175 74 65 ~ ~ ~ ~ ~ ~ ~ ~ 83.50 216.70 22.00

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. 28 37 13 9 2 0 0 0 89 61 24 11 2 0 0 0 163
REL. 31.4 41.5 14.6 10.1 2.2 0.0 0.0 0.0 100.0 68.5 27.0 12.4 2.2 0.0 0.0 0.029.3
ID 31 41 14 20 11 0 0 0 119
ABS. 45 39 2 0 0 0 0 0 86 41 2 0 0 0 0 0 90
REL. 52.3 45.3 2.3 0.0 0.0 0.0 0.0 0.0 100.0 47.7 2.3 0.0 0.0 0.0 0.0 0.0 1.4
ID 52 45 2 0 0 0 0 0 100
ABS. 35 45 8 2 0 0 0 0 90 55 10 2 0 0 0 0 132
REL. 38.8 50.0 8.8 2.2 0.0 0.0 0.0 0.0100.0 61.1 11.1 2.2 0.0 0.0 0.0 0.0 30.9
ID 38 50 8 4 0 0 0 0 102
ABS. 12 38 22 6 4 1 0 0 83 71 33 11 5 1 0 0 217
REL 14.4 45.7 26.5 7.2 4.8 1.2 0.0 0.0100.0 85.5 39.8 13.3 6.0 1.2 0.0 0.020.12
ID 14 45 26 14 24 30 0 0 155
Year
ABS. 120 159 45 17 6 1 0 0 348 228 69 24 7 1 0 0 217
REL. 34.4 45.6 12.9 4.8 1.7 0.2 0.0 0.0100.0 65.5 19.8 6.9 2.0 0.3 0.0 0.020.12
ID 34 45 12 9 8 7 0 0 118

Note:

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