Detailed overview of ambient air pollution valuis from individual stations

Year: 1998
Pollutant:p-atmospheric pressure
Station:1028 - Nepomysl
Code:CZLNCMNEP
Institution:CHMI
Region:Severocesky
District:Louny
IHd: 150
Measure method:atmospheric pressure measurement
Unit:hPa

Average daily concentrations

Day/
Month

12345678910111213141516171819202122232425262728293031XMaxN
1 963 951 947 948 948 ~ ~ 965 971 974 973 971 964 967 965 954 966 954 942 962 978 976 974 970 978 977 970 965 967 961 970 964.58 978.34 29.00
2 968 956 959 964 966 969 966 974 972 973 970 968 972 973 968 958 977 977 971 971 967 965 974 974 977 971 958 954 ~ ~ ~ 968.23 977.13 28.00
3 961 959 953 944 958 957 948 950 970 973 964 965 966 966 967 966 968 972 975 972 974 976 977 977 977 969 963 961 961 963 957 964.90 977.44 31.00
4 951 948 945 948 951 951 944 946 946 939 941 942 949 954 946 943 938 945 955 958 962 963 958 960 958 949 943 ~ 948 950 ~ 949.38 962.59 29.00
5 948 949 952 951 952 956 964 967 966 963 959 962 966 965 964 962 965 966 963 959 957 961 960 955 950 950 952 951 951 953 953 957.78 966.94 31.00
6 957 955 959 961 959 953 952 961 955 949 947 953 961 956 954 958 964 966 963 965 959 959 958 956 955 956 954 959 960 954 ~ 957.26 966.06 30.00
7 952 956 957 959 955 951 950 953 953 953 951 951 949 954 957 956 955 955 959 956 954 959 957 959 961 958 951 951 950 952 958 954.61 960.55 31.00
8 957 959 964 963 968 966 963 959 962 964 959 955 956 959 960 961 958 958 961 954 947 951 955 951 960 953 958 960 962 961 961 958.85 968.14 31.00
9 963 961 958 955 952 953 953 955 953 952 948 939 940 939 945 948 954 ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ 950.98 963.16 17.00
10 ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
11 ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ 946 943 933 942 948 957 957 958 967 972 966 957 953 958 959 959 959 957 968 ~ 955.72 971.86 19.00
12 974 971 958 944 942 951 963 971 969 964 965 963 959 963 960 965 967 956 945 945 958 966 964 965 961 951 945 955 963 961 960 959.43 974.28 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. 0 0 0 0 0 0 0 88 88 88 88 88 88 88 88 88 978
REL. 0.0 0.0 0.0 0.0 0.0 0.0 0.0100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.021.1
ID 0 0 0 0 0 0 06250062500
ABS. 0 0 0 0 0 0 0 90 90 90 90 90 90 90 90 90 967
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 79 79 79 79 79 79 79 79 79 968
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 5.8
ID 0 0 0 0 0 0 06250062500
ABS. 0 0 0 0 0 0 0 50 501 50 50 50 50 50 50 50 974
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 1.12
ID 0 0 0 0 0 0 06250062500
Year
ABS. 0 0 0 0 0 0 0 307 307 307 307 307 307 307 307 307 978
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 21.1
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