Detailed overview of ambient air pollution valuis from individual stations

997 - Plzen-Masarykova tr.

Year: 1997
Pollutant:SO2-sulphur dioxide
Station: 997 - Plzen-Masarykova tr.
Code:CZPMCMMAS
Institution:CHMI
Region:Zapadocesky
District:Plzen-mesto
IHd: 150
Measure method:coulometry
Unit:ug/m^3

Average daily concentrations

Day/
Month

12345678910111213141516171819202122232425262728293031XMaxN
1 199 212 131 129 167 156 200 135 113 128 68 52 ~ 193 269 262 241 147 110 74 74 90 151 146 94 70 125 50 50 37 40 130.46 269.13 30.00
2 88 143 153 44 44 64 114 98 118 59 19 21 21 44 15 38 48 21 18 23 23 26 53 34 16 23 21 28 ~ ~ ~ 50.58 153.28 28.00
3 30 21 19 25 28 50 38 52 41 35 42 33 27 22 25 19 35 23 23 31 34 20 19 33 54 29 40 22 18 21 25 30.12 54.46 31.00
4 79 49 29 16 17 20 44 46 59 29 22 18 50 30 17 24 29 30 27 23 35 45 36 30 25 17 18 18 20 18 ~ 30.61 78.56 30.00
5 28 ~ ~ ~ 14 18 23 20 14 20 15 29 18 14 8.83 5.92 2.85 2.10 7.60 5.75 8.92 11 13 12 9 15 10 11 17 19 20 14.04 28.73 28.00
6 22 17 20 21 8.27 9 7.98 7.63 13 10 7.48 22 16 5.92 8.44 17 30 19 8.85 7.96 6.52 7.88 11 11 9 12 8.31 13 8.83 7.50 ~ 12.44 30.44 30.00
7 6.58 4.63 7.21 8.10 6.67 5.50 10 8.17 17 16 7.56 8.06 12 10 10 17 10 11 13 7.06 6.69 11 12 9 7.44 6.75 6.92 12 23 20 12 10.41 22.94 31.00
8 ~ 16 20 26 19 15 11 11 10 8.15 8.19 7.67 12 12 15 14 5.63 8.50 10 11 15 20 21 35 17 11 16 7.13 10 8.77 14 13.84 34.81 30.00
9 10 4.92 5.94 28 21 12 14 15 13 13 26 20 14 19 24 21 ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ 16.41 28.31 16.00
10 ~ ~ 31 27 33 46 42 23 15 16 13 12 14 19 23 26 30 32 40 34 32 37 43 22 18 12 28 33 52 ~ 55 28.92 55.40 28.00
11 41 52 ~ 41 41 50 69 49 34 35 44 34 26 30 23 29 42 30 34 54 49 59 53 52 33 58 47 33 36 31 ~ 41.74 69.42 29.00
12 29 39 37 31 23 24 22 25 24 27 23 25 19 27 52 61 25 32 37 33 38 40 36 18 18 13 20 22 19 34 52 29.90 60.92 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- 50 51- 100 101- 150 151- 225 226- 300 301- 450 451- 600 over 600 50 100 150 225 300 450 600
ABS. 50 16 12 8 3 0 0 0 89 39 23 11 3 0 0 0 269
REL. 56.1 17.9 13.4 8.9 3.3 0.0 0.0 0.0 100.0 43.8 25.8 12.4 3.4 0.0 0.0 0.015.1
ID 56 17 13 17 16 0 0 0 122
ABS. 85 3 0 0 0 0 0 0 88 3 0 0 0 0 0 0 79
REL. 96.5 3.4 0.0 0.0 0.0 0.0 0.0 0.0 100.0 3.4 0.0 0.0 0.0 0.0 0.0 0.0 1.4
ID 96 3 0 0 0 0 0 0 100
ABS. 77 0 0 0 0 0 0 0 77 0 0 0 0 0 0 0 35
REL.100.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0100.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 24.8
ID 100 0 0 0 0 0 0 0 100
ABS. 75 13 0 0 0 0 0 0 88 13 0 0 0 0 0 0 69
REL 85.2 14.7 0.0 0.0 0.0 0.0 0.0 0.0100.0 14.8 0.0 0.0 0.0 0.0 0.0 0.0 7.11
ID 85 14 0 0 0 0 0 0 100
Year
ABS. 287 32 12 8 3 0 0 0 342 55 23 11 3 0 0 0 269
REL. 83.9 9.3 3.5 2.3 0.8 0.0 0.0 0.0100.0 16.1 6.7 3.2 0.9 0.0 0.0 0.0 15.1
ID 83 9 3 4 4 0 0 0 105

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