Detailed overview of ambient air pollution valuis from individual stations

Year: 1998
Pollutant:p-atmospheric pressure
Station: 774 - Pha4-Libus
Code:CZ04CMLIB
Institution:CHMI
Region:Hlavni mesto Praha
District:Praha 4
IHd: 150
Measure method:atmospheric pressure measurement
Unit:hPa

Average daily concentrations

Day/
Month

12345678910111213141516171819202122232425262728293031XMaxN
1 1001 990 990 991 990 998 1002 1008 1013 1015 1012 1008 1001 1004 1006 997 1007 995 982 1001 1015 1014 1011 1008 1015 1016 1007 1002 1006 1000 1007 1003.65 1015.80 31.00
2 1005 994 997 1003 1006 1010 1007 1015 1015 1015 1013 1011 1015 1015 1011 1000 1018 1018 1012 1011 1005 1006 1015 1017 1019 1014 1001 995 ~ ~ ~ 1009.30 1019.19 28.00
3 1001 1002 997 988 999 1000 991 990 1008 1012 1003 1004 1006 1005 1009 1008 1010 1014 1016 1010 1014 1016 1016 1017 1016 1009 1005 1004 1003 1004 1000 1005.72 1016.82 31.00
4 995 991 987 990 994 987 986 987 986 981 983 982 988 995 986 983 978 985 996 1002 1004 1005 1001 ~ 1002 993 986 991 992 994 ~ 990.60 1005.28 29.00
5 992 991 992 992 993 998 1007 1011 1009 1006 1002 1005 1009 1009 1007 1005 1007 1009 1006 1003 999 1002 1001 996 993 993 995 994 995 997 996 1000.43 1010.65 31.00
6 1000 999 1003 1005 1003 998 996 1005 999 992 989 993 1002 999 997 1002 1008 1009 1008 1009 1004 1003 1003 1000 999 1000 998 1002 1003 997 ~ 1000.79 1009.27 30.00
7 996 999 999 1001 997 994 991 993 996 996 995 995 993 998 1000 999 999 1000 1002 1000 998 1004 1001 1004 1004 1001 995 995 995 996 1002 998.07 1004.06 31.00
8 1001 1002 1007 1007 1011 1010 1006 1003 1005 1006 1003 999 999 1001 1003 1004 1001 1000 1004 998 990 993 998 994 1002 996 999 1001 1002 1003 1003 1001.65 1011.13 31.00
9 1006 1004 1001 998 993 995 995 998 997 995 989 978 980 981 986 989 994 1009 1016 1018 1015 1011 1009 1005 999 993 990 990 993 994 ~ 997.30 1018.24 30.00
10 993 994 996 994 998 1000 997 1004 1002 995 994 994 1005 1003 1004 ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ 998.11 1004.67 15.00

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. 0 0 0 0 0 0 0 90 90 90 90 90 90 90 90 90 1019
REL. 0.0 0.0 0.0 0.0 0.0 0.0 0.0100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.025.2
ID 0 0 0 0 0 0 06250062500
ABS. 0 0 0 0 0 0 0 90 90 90 90 90 90 90 90 90 1011
REL. 0.0 0.0 0.0 0.0 0.0 0.0 0.0100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 8.5
ID 0 0 0 0 0 0 06250062500
ABS. 0 0 0 0 0 0 0 92 92 92 92 92 92 92 92 92 1018
REL. 0.0 0.0 0.0 0.0 0.0 0.0 0.0100.0100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 20.9
ID 0 0 0 0 0 0 06250062500
ABS. 0 0 0 0 0 0 0 15 152 15 15 15 15 15 15 15 1005
REL 0.0 0.0 0.0 0.0 0.0 0.0 0.0100.0100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.013.10
ID 0 0 0 0 0 0 06250062500
Year
ABS. 0 0 0 0 0 0 0 287 287 287 287 287 287 287 287 287 1019
REL. 0.0 0.0 0.0 0.0 0.0 0.0 0.0100.0100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 25.2
ID 0 0 0 0 0 0 06250062500

Note:

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