% Data for Exercise 18.12: Atmospheric CO2 values derived from in situ air samples collected at Mauna Loa, Hawaii, USA 
% CO2 expressed as a mole fraction in dry air, micromol/mol, abbreviated as ppm
% x = year, y = yearly mean [ppm]

x = [1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008];

y = [315.97
316.91
317.64
318.45
318.99
319.62
320.04
321.38
322.16
323.04
324.62
325.68
326.32
327.45
329.68
330.18
331.11
332.04
333.83
335.40
336.84
338.75
340.11
341.45
343.05
344.65
346.12
347.42
349.19
351.57
353.12
354.39
355.61
356.45
357.10
358.83
360.82
362.61
363.73
366.70
368.38
369.55
371.14
373.28
375.80
377.52
379.80
381.90
383.79
385.60];
