Detailed overview of ambient air pollution valuis from individual stations

Year: 1998
Pollutant:NOx-nitrogen oxides(oxides of nitrogen)
Station: 776 - Pha6-Santinka
Code:CZ06CMSAN
Institution:CHMI
Region:Hlavni mesto Praha
District:Praha 6
IHd: 100
Measure method:chemiluminescence
Unit:ug/m^3

Average daily concentrations

Day/
Month

12345678910111213141516171819202122232425262728293031XMaxN
1 58 68 16 15 17 20 54 14 16 132 98 88 53 97 148 86 17 60 43 21 28 37 35 51 45 117 148 65 74 44 38 58.22 148.49 31.00
2 66 74 38 175 204 131 62 41 58 93 83 31 27 23 24 27 25 72 72 110 103 79 57 41 70 74 33 16 ~ ~ ~ 68.20 204.39 28.00
3 17 23 24 21 12 18 11 9 17 55 53 34 14 12 35 26 22 20 14 14 12 28 36 29 56 71 48 48 44 68 105 32.15 105.07 31.00
4 90 47 38 19 21 10 12 ~ 63 38 33 18 40 39 68 47 48 24 21 71 58 49 62 42 35 33 31 39 35 34 ~ 40.29 90.21 29.00
5 25 19 18 18 27 31 71 40 35 41 46 41 35 29 32 23 27 38 33 35 41 17 24 22 32 37 44 33 27 25 35 32.30 70.64 31.00
6 29 39 34 34 44 30 20 44 62 27 27 18 13 52 24 20 27 25 22 31 44 28 21 28 40 34 25 14 23 19 ~ 29.94 62.37 30.00
7 17 30 21 11 11 14 30 15 16 21 11 23 19 16 26 24 22 13 37 68 36 39 35 31 22 34 32 15 17 15 27 24.19 68.23 31.00
8 21 13 40 24 23 36 37 39 28 49 54 48 41 37 41 34 51 28 31 47 15 8.60 15 13 12 26 13 10 12 20 33 28.97 54.15 31.00
9 63 48 35 53 24 30 71 60 41 33 66 22 28 25 22 25 28 29 36 48 42 59 51 79 99 61 90 48 84 73 ~ 49.14 98.99 30.00
10 34 38 33 33 44 37 57 53 63 19 17 22 37 39 39 97 38 22 73 32 59 52 60 28 14 30 18 12 17 16 17 37.15 97.34 31.00
11 13 38 45 40 24 26 87 83 135 69 23 118 88 61 34 51 27 35 60 32 43 69 112 180 67 86 166 168 72 79 ~ 71.03 180.33 30.00
12 45 86 88 58 25 16 23 33 81 173 114 139 21 39 87 26 119 173 21 24 23 36 84 53 25 23 32 78 85 62 37 62.21 173.22 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. 36 28 16 8 1 1 0 0 90 54 26 10 2 1 0 0 204
REL. 40.0 31.1 17.7 8.8 1.1 1.1 0.0 0.0 100.0 60.0 28.9 11.1 2.2 1.1 0.0 0.05.2
ID 40 31 17 17 5 27 0 0 140
ABS. 47 39 4 0 0 0 0 0 90 43 4 0 0 0 0 0 90
REL. 52.2 43.3 4.4 0.0 0.0 0.0 0.0 0.0 100.0 47.8 4.4 0.0 0.0 0.0 0.0 0.0 1.4
ID 52 43 4 0 0 0 0 0 100
ABS. 53 32 7 0 0 0 0 0 92 39 7 0 0 0 0 0 99
REL. 57.6 34.7 7.6 0.0 0.0 0.0 0.0 0.0100.0 42.4 7.6 0.0 0.0 0.0 0.0 0.0 25.9
ID 57 34 7 0 0 0 0 0 100
ABS. 33 30 18 6 5 0 0 0 92 59 29 11 5 0 0 0 180
REL 35.8 32.6 19.5 6.5 5.4 0.0 0.0 0.0100.0 64.1 31.5 12.0 5.4 0.0 0.0 0.024.11
ID 35 32 19 13 27 0 0 0 128
Year
ABS. 169 129 45 14 6 1 0 0 364 195 66 21 7 1 0 0 204
REL. 46.4 35.4 12.3 3.8 1.6 0.2 0.0 0.0100.0 53.6 18.1 5.8 1.9 0.3 0.0 0.0 5.2
ID 46 35 12 7 8 6 0 0 117

Note:

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