function [t,xn,xs,en,es,scale]=cfc12atmhist93;
% CFC12ATMHIST Atmospheric history for CFC12
%
% [T,XN,XS,EN,ES,SCALE]=CFC12ATMHIST Returns columnn vectors of:
% T  = Time (mid year)
% XN = Mixing ratio in N. hemisphere [ppt]
% XS = Mixing ratio in S. hemisphere [ppt]
% EN = Uncertainty in N. hemisphere mixing ratio [ppt]
% ES = Uncertainty in S. hemisphere mixing ratio [ppt]
% SCALE = Name of calibration scale against which measurements were made
%
% Atmospheric lifetime assumed to be 100.0 years
%
% All concentrations are on the SIO-93 scale
%
% This files obtained from:
%
%  http://gaslab.ucsd.edu/pub/cfchist/ 
%  Created: 13:02 15-Sep-1999
%
%   Stephen J. Walker 
%   Scripps Institution of Oceanography

% This file created by
% /lab/stephen/CFCHist/UncertAnalysis/write_matlab_history.m
%
%      Northern        Southern
% Year Value Error  Value  Error
%      [ppt] [ppt]  [ppt]  [ppt]
%  (1)  (2)   (3)    (4)    (5)
%
scale='SIO-93';

data=[
 1931.5   0.0  0.0    0.0  0.0
 1932.5   0.0  0.0    0.0  0.0
 1933.5   0.0  0.0    0.0  0.0
 1934.5   0.0  0.0    0.0  0.0
 1935.5   0.0  0.0    0.0  0.0
 1936.5   0.1  0.0    0.0  0.0
 1937.5   0.1  0.0    0.1  0.0
 1938.5   0.2  0.0    0.1  0.0
 1939.5   0.2  0.0    0.2  0.0
 1940.5   0.4  0.0    0.3  0.0
 1941.5   0.5  0.0    0.4  0.0
 1942.5   0.7  0.0    0.5  0.0
 1943.5   0.9  0.0    0.7  0.0
 1944.5   1.2  0.0    0.9  0.0
 1945.5   1.6  0.0    1.2  0.0
 1946.5   2.3  0.1    1.7  0.0
 1947.5   3.4  0.1    2.4  0.1
 1948.5   4.7  0.1    3.4  0.1
 1949.5   6.1  0.1    4.6  0.1
 1950.5   7.6  0.2    5.9  0.1
 1951.5   9.2  0.2    7.4  0.2
 1952.5  10.9  0.2    9.0  0.2
 1953.5  12.8  0.3   10.7  0.3
 1954.5  14.9  0.3   12.5  0.3
 1955.5  17.3  0.4   14.6  0.3
 1956.5  20.1  0.4   17.0  0.4
 1957.5  23.3  0.5   19.8  0.4
 1958.5  26.7  0.6   22.8  0.5
 1959.5  30.3  0.6   26.1  0.6
 1960.5  34.7  0.7   29.9  0.7
 1961.5  39.8  0.8   34.2  0.7
 1962.5  45.5  0.9   39.1  0.8
 1963.5  52.2  1.1   44.8  1.0
 1964.5  60.0  1.2   51.4  1.1
 1965.5  68.9  1.4   59.1  1.3
 1966.5  78.7  1.6   67.7  1.5
 1967.5  89.7  1.8   77.4  1.7
 1968.5 102.1  2.0   88.2  1.9
 1969.5 116.0  2.3  100.4  2.2
 1970.5 131.2  2.6  114.0  2.4
 1971.5 147.4  2.9  128.8  2.7
 1972.5 165.1  3.2  144.7  3.1
 1973.5 184.5  3.6  162.2  3.4
 1974.5 205.8  4.0  181.3  3.8
 1975.5 226.7  4.3  201.6  4.2
 1976.5 246.4  4.5  221.7  4.6
 1977.5 265.2  4.7  241.1  4.9
 1978.5 282.4  4.9  259.5  5.2
 1979.5 303.8  2.6  272.1  2.2
 1980.5 321.3  4.0  290.7  1.8
 1981.5 337.8  3.2  307.1  2.2
 1982.5 351.7  4.4  323.7  1.9
 1983.5 367.1  5.3  340.7  2.1
 1984.5 383.8  2.8  357.4  2.1
 1985.5 401.4  2.5  376.2  2.0
 1986.5 422.0  3.8  394.4  2.5
 1987.5 441.8  4.3  414.1  3.2
 1988.5 462.9  2.9  433.5  2.8
 1989.5 481.2  2.9  452.0  2.1
 1990.5 495.3  2.8  470.2  2.1
 1991.5 503.5  2.9  484.7  2.4
 1992.5 513.6  2.3  495.9  2.3
 1993.5 520.4  1.5  504.2  1.5
 1994.5 526.2  1.4  512.1  0.3
 1995.5 531.4  0.5  518.5  0.2
 1996.5 534.9  0.4  523.5  0.3
 1997.5 537.7  0.4  528.0  0.2
 1998.5 539.7  0.7  531.2  0.3
];
t =data(:,1);
xn=data(:,2);
en=data(:,3);
xs=data(:,4);
es=data(:,5);