Annual precipitation at rain gauge station X and the average annual precipitation at 20 surrounding rain gauge stations are given below. Examine the consistency of data at station X. Indicate at what year a regime change has occurred and how you are going to make the necessary adjustments. Year Annual Precipitation at Station x (mm) Mean of annual Precipitation of 20 surrounding stations (mm) 1962 35.5 25.8 1963 43.9 38.0 1964 48.7 33.2 1965 37.2 30.4 1966 32.4 28.2 1967 37.0 31.2 1968 54.3 39.1 1969 33.4 31.4 1970 29.6 28.1 1971 26.8 25.6 1972 33.2 36.3 1973 22.3 26.4 1974 27.3 39.0 1975 33.4 34.2 1976 29.1 26.1 1977 31.9 26.4 1978 25.6 26.1 1979 34.5 36.2 1980 33.4 29.4
Annual precipitation at rain gauge station X and the average annual precipitation at 20 surrounding rain gauge stations are given below. Examine the consistency of data at station X. Indicate at what year a regime change has occurred and how you are going to make the necessary adjustments. Year Annual Precipitation at Station x (mm) Mean of annual Precipitation of 20 surrounding stations (mm) 1962 35.5 25.8 1963 43.9 38.0 1964 48.7 33.2 1965 37.2 30.4 1966 32.4 28.2 1967 37.0 31.2 1968 54.3 39.1 1969 33.4 31.4 1970 29.6 28.1 1971 26.8 25.6 1972 33.2 36.3 1973 22.3 26.4 1974 27.3 39.0 1975 33.4 34.2 1976 29.1 26.1 1977 31.9 26.4 1978 25.6 26.1 1979 34.5 36.2 1980 33.4 29.4
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:Annual precipitation at rain gauge station X and the average annual precipitation at 20
surrounding rain gauge stations are given below. Examine the consistency of data at station
X. Indicate at what year a regime change has occurred and how you are going to make the
necessary adjustments.
Year
Annual Precipitation at
Station x (mm)
Mean of annual
Precipitation of 20
surrounding stations (mm)
1962
35.5
25.8
1963
43.9
38.0
1964
48.7
33.2
1965
37.2
30.4
1966
32.4
28.2
1967
37.0
31.2
1968
54.3
39.1
1969
33.4
31.4
1970
29.6
28.1
1971
26.8
25.6
1972
33.2
36.3
1973
22.3
26.4
1974
27.3
39.0
1975
33.4
34.2
1976
29.1
26.1
1977
31.9
26.4
1978
25.6
26.1
1979
34.5
36.2
1980
33.4
29.4
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