Detailed overview of ambient air pollution valuis from individual stations

Year: 2001
Pollutant:NOx-nitrogen oxides(oxides of nitrogen)
Station: 776 - Pha6-Santinka
Code:CZ06CMSAN
Institution:Czech Hydrometeorological Institute
Region:Prague
District:Praha 6
IHd: 100
Measure method:chemiluminescence
Unit:ug/m^3

Average daily concentrations

Day/
Month

12345678910111213141516171819202122232425262728293031XMaxN
1 56 50 109 112 101 32 59 51 56 115 60 87 131 86 123 96 37 73 76 60 55 57 54 70 101 79 46 109 117 40 35 75.19 130.77 31.00
2 30 48 66 69 39 59 116 101 60 93 98 183 46 81 252 236 46 20 26 17 19 19 23 39 94 59 88 73 ~ ~ ~ 74.88 251.61 28.00
3 84 60 44 63 37 58 62 65 121 32 52 36 27 25 100 110 56 58 16 31 69 86 98 59 48 27 42 52 47 83 77 58.90 121.17 31.00
4 97 94 84 53 36 43 30 28 60 49 33 22 14 20 19 43 51 34 46 37 19 20 63 85 52 34 59 35 46 44 ~ 45.05 96.70 30.00
5 40 36 37 34 20 17 24 26 45 47 23 29 45 35 35 29 26 24 25 35 27 43 55 52 27 43 22 28 18 28 35 32.55 55.14 31.00
6 19 15 8.81 16 54 54 27 28 24 24 22 31 46 46 40 14 14 17 19 37 36 20 12 34 39 40 54 28 32 21 ~ 29.05 54.22 30.00
7 16 28 25 26 28 19 15 14 22 42 23 23 26 19 15 19 26 28 33 21 22 32 26 26 19 28 34 35 31 47 33 25.88 47.24 31.00
8 30 38 29 17 16 28 30 35 35 23 25 38 53 59 39 34 21 24 40 26 23 32 42 69 55 50 37 16 45 48 56 35.89 69.36 31.00
9 21 20 38 30 25 23 21 11 9 19 18 33 38 36 22 27 31 42 66 46 31 43 42 40 32 36 68 39 48 47 ~ 33.46 68.28 30.00
10 43 45 53 44 75 46 58 74 84 54 30 140 83 92 90 87 65 92 148 74 38 32 80 87 84 65 42 34 24 31 52 65.98 148.30 31.00
11 16 28 50 53 63 54 29 23 24 121 104 78 36 52 142 92 81 54 37 61 50 23 20 34 125 183 130 36 38 72 ~ 63.60 183.40 30.00
12 37 41 75 86 104 71 36 47 114 133 70 31 48 54 53 22 41 43 43 29 27 31 24 23 16 19 24 19 36 16 21 46.21 132.68 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. 14 39 20 14 1 2 0 0 90 76 37 17 3 2 0 0 252
REL. 15.5 43.3 22.2 15.5 1.1 2.2 0.0 0.0 100.0 84.4 41.1 18.9 3.3 2.2 0.0 0.015.2
ID 15 43 22 31 5 55 0 0 173
ABS. 43 44 4 0 0 0 0 0 91 48 4 0 0 0 0 0 97
REL. 47.2 48.3 4.3 0.0 0.0 0.0 0.0 0.0 100.0 52.7 4.4 0.0 0.0 0.0 0.0 0.0 1.4
ID 47 48 4 0 0 0 0 0 100
ABS. 56 34 2 0 0 0 0 0 92 36 2 0 0 0 0 0 69
REL. 60.8 36.9 2.1 0.0 0.0 0.0 0.0 0.0100.0 39.1 2.2 0.0 0.0 0.0 0.0 0.0 24.8
ID 60 36 2 0 0 0 0 0 100
ABS. 24 37 20 10 1 0 0 0 92 68 31 11 1 0 0 0 183
REL 26.0 40.2 21.7 10.8 1.0 0.0 0.0 0.0100.0 73.9 33.7 12.0 1.1 0.0 0.0 0.026.11
ID 26 40 21 21 5 0 0 0 115
Year
ABS. 137 154 46 24 2 2 0 0 365 228 74 28 4 2 0 0 252
REL. 37.5 42.1 12.6 6.5 0.5 0.5 0.0 0.0100.0 62.5 20.3 7.7 1.1 0.5 0.0 0.0 15.2
ID 37 42 12 13 2 13 0 0 121

Note:

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