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Table 2

Calculated results for CFC atmospheric partial pressure (pptv), fraction of post-1940 water, and young precipitation recharge year

Sample IDMeasured CFCs (pmol/L)
Atmospheric partial pressure (pptv)
Mixing post-1940 water in decimal year (F12/F113)Fraction of post-1940 water (BM, %)Recharge year (calendar year)
CFC-11CFC-12CFC-113CFC-11CFC-12CFC-113CFC-11CFC-12CFC-113
YC-1 0.33 1.34 0.09 25.31 382.69 23.04 1986 53.1 1965 1985 1980 
YC-3 0.33 0.82 0.11 23.28 217.23 25.71   1965 1975 1981 
YC-6 2.21 2.56 0.38 158.31 687.69 90.28   1979   
YC-10 0.61 1.64 0.14 45.70 458.24 34.99   1969 1988 1984 
YC-11 4.48 1.91 0.25 319.13 510.15 59.10    1992 1988 
YC-41 0.32 0.85 0.09 19.01 193.09 17.41 1983 54.7 1964 1974 1979 
YC-42 0.52 0.89 0.12 32.36 210.77 24.44 1986 53.9 1966 1975 1981 
YC-43 0.51 0.99 0.1 33.45 245.81 21.56 1982 73.5 1967 1976 1980 
Sample IDMeasured CFCs (pmol/L)
Atmospheric partial pressure (pptv)
Mixing post-1940 water in decimal year (F12/F113)Fraction of post-1940 water (BM, %)Recharge year (calendar year)
CFC-11CFC-12CFC-113CFC-11CFC-12CFC-113CFC-11CFC-12CFC-113
YC-1 0.33 1.34 0.09 25.31 382.69 23.04 1986 53.1 1965 1985 1980 
YC-3 0.33 0.82 0.11 23.28 217.23 25.71   1965 1975 1981 
YC-6 2.21 2.56 0.38 158.31 687.69 90.28   1979   
YC-10 0.61 1.64 0.14 45.70 458.24 34.99   1969 1988 1984 
YC-11 4.48 1.91 0.25 319.13 510.15 59.10    1992 1988 
YC-41 0.32 0.85 0.09 19.01 193.09 17.41 1983 54.7 1964 1974 1979 
YC-42 0.52 0.89 0.12 32.36 210.77 24.44 1986 53.9 1966 1975 1981 
YC-43 0.51 0.99 0.1 33.45 245.81 21.56 1982 73.5 1967 1976 1980 

BM, binary mixing, assuming a mixture of CFC-free water (pre-1940) with young water (post 1940).

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