Detailed overview of ambient air pollution valuis from individual stations

771 - PHA1-nam. Republiky

Year: 1997
Pollutant:NOx-nitrogen oxides(oxides of nitrogen)
Station: 771 - PHA1-nam. Republiky
Code:CZ01CMREP
Institution:CHMI
Region:Hlavni mesto Praha
District:Praha 1
IHd: 100
Measure method:chemiluminescence
Unit:ug/m^3

Average daily concentrations

Day/
Month

12345678910111213141516171819202122232425262728293031XMaxN
1 115 144 95 100 80 91 123 203 87 110 81 61 130 253 266 232 222 153 98 235 167 106 168 219 115 67 189 161 163 144 126 145.32 266.28 31.00
2 111 130 194 140 133 131 186 170 115 111 83 84 69 127 88 67 112 89 96 93 70 89 102 90 54 75 93 119 ~ ~ ~ 107.91 193.79 28.00
3 115 52 99 97 144 128 137 144 128 172 150 168 96 86 51 53 98 84 118 89 100 82 53 114 138 115 69 57 60 57 128 102.61 171.94 31.00
4 156 146 82 63 46 43 101 90 137 87 50 50 60 56 70 69 114 72 51 70 117 104 106 107 70 61 72 85 66 52 ~ 81.78 155.74 30.00
5 74 71 90 49 46 35 65 54 41 52 ~ 34 43 87 71 49 30 31 69 61 53 66 60 51 46 80 54 56 54 51 45 55.61 90.20 30.00
6 46 67 59 80 45 77 40 29 59 66 63 90 52 35 37 49 83 78 53 60 37 59 45 55 86 70 74 53 35 54 ~ 57.78 90.48 30.00
7 66 57 ~ 47 44 32 56 52 75 65 73 52 59 92 72 85 115 62 33 32 80 64 83 81 45 37 29 66 72 65 57 61.61 114.81 30.00
8 59 48 46 80 60 56 53 70 60 54 91 87 99 114 64 38 38 97 96 99 95 87 64 66 111 128 130 67 57 44 66 74.95 130.12 31.00
9 92 103 67 74 59 50 27 33 24 80 106 105 55 59 97 101 124 173 72 62 102 165 111 103 141 136 90 125 176 99 ~ 93.60 175.99 30.00
10 62 58 69 85 79 186 128 100 58 65 25 37 71 77 95 96 105 124 109 106 111 137 89 61 32 43 93 121 166 143 103 91.32 185.96 31.00
11 129 107 83 104 151 256 376 106 90 201 164 148 87 115 100 70 87 76 116 220 320 144 158 146 150 150 172 156 175 133 ~ 149.68 376.10 30.00
12 110 114 137 92 ~ ~ ~ 125 222 114 122 101 81 84 91 116 86 95 144 104 159 256 179 80 52 57 67 91 104 128 178 117.43 256.02 28.00

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. 0 9 30 33 11 7 0 0 90 90 81 51 18 7 0 0 266
REL. 0.0 10.0 33.3 36.6 12.2 7.7 0.0 0.0 100.0 100.0 90.0 56.7 20.0 7.8 0.0 0.015.1
ID 0 10 33 73 61 194 0 0 372
ABS. 3 53 25 8 1 0 0 0 90 87 34 9 1 0 0 0 156
REL. 3.3 58.8 27.7 8.8 1.1 0.0 0.0 0.0 100.0 96.7 37.8 10.0 1.1 0.0 0.0 0.0 1.4
ID 3 58 27 17 5 0 0 0 113
ABS. 7 37 28 16 3 0 0 0 91 84 47 19 3 0 0 0 176
REL. 7.6 40.6 30.7 17.5 3.2 0.0 0.0 0.0100.0 92.3 51.6 20.9 3.3 0.0 0.0 0.0 29.9
ID 7 40 30 35 16 0 0 0 130
ABS. 2 9 25 34 12 5 2 0 89 87 78 53 19 7 2 0 376
REL 2.2 10.1 28.0 38.2 13.4 5.6 2.2 0.0100.0 97.8 87.6 59.6 21.3 7.9 2.2 0.0 7.11
ID 2 10 28 76 67 140 280 0 605
Year
ABS. 12 108 108 91 27 12 2 0 360 348 240 132 41 14 2 0 376
REL. 3.3 30.0 30.0 25.2 7.5 3.3 0.5 0.0100.0 96.7 66.7 36.7 11.4 3.9 0.6 0.0 7.11
ID 3 30 30 50 37 83 69 0 304

Note:

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

Detailed overview of ambient air pollution valuis from individual stations - selection station