# --------------------------------------------------------------------
# USE OF NOAA GML DATA
# 
# These data are made freely available to the public and the scientific
# community in the belief that their wide dissemination will lead to
# greater understanding and new scientific insights. To ensure that GML
# receives fair credit for their work please include relevant citation
# text in publications. We encourage users to contact the data providers,
# who can provide detailed information about the measurements and
# scientific insight.  In cases where the data are central to a
# publication, coauthorship for data providers may be appropriate.
# 
# 
# 
# Contact:  Xin Lan (xin.lan@noaa.gov)
# 
# File Creation: Fri Apr  5 03:55:26 2024
# 
# 
# --------------------------------------------------------------------
# 
# 
# See gml.noaa.gov/ccgg/trends/ for additional details.
# 
# Data from March 1958 through April 1974 have been obtained by C. David Keeling
# of the Scripps Institution of Oceanography (SIO) and were obtained from the
# Scripps website (scrippsco2.ucsd.edu).
#
# The estimated uncertainty in the annual mean is the standard deviation
# of the differences of annual mean values determined independently by
# NOAA/ESRL and the Scripps Institution of Oceanography.
#
# NOTE: In general, the data presented for the last year are subject to change,
# depending on recalibration of the reference gas mixtures used, and other quality
# control procedures. Occasionally, earlier years may also be changed for the same
# reasons.  Usually these changes are minor.
#
# CO2 expressed as a mole fraction in dry air, micromol/mol, abbreviated as ppm
#
# NOTE: Due to the eruption of the Mauna Loa Volcano, measurements from Mauna Loa Observatory
# were suspended as of Nov. 29, 2022 and resumed in July 2023. 
# Observations starting from December 2022 to July 4, 2023 are from a site at the 
# Maunakea Observatories, approximately 21 miles north of the Mauna Loa Observatory.
# 
# year     mean      unc
  1959   315.98     0.12
  1960   316.91     0.12
  1961   317.64     0.12
  1962   318.45     0.12
  1963   318.99     0.12
  1964   319.62     0.12
  1965   320.04     0.12
  1966   321.37     0.12
  1967   322.18     0.12
  1968   323.05     0.12
  1969   324.62     0.12
  1970   325.68     0.12
  1971   326.32     0.12
  1972   327.46     0.12
  1973   329.68     0.12
  1974   330.19     0.12
  1975   331.13     0.12
  1976   332.03     0.12
  1977   333.84     0.12
  1978   335.41     0.12
  1979   336.84     0.12
  1980   338.76     0.12
  1981   340.12     0.12
  1982   341.48     0.12
  1983   343.15     0.12
  1984   344.87     0.12
  1985   346.35     0.12
  1986   347.61     0.12
  1987   349.31     0.12
  1988   351.69     0.12
  1989   353.20     0.12
  1990   354.45     0.12
  1991   355.70     0.12
  1992   356.54     0.12
  1993   357.21     0.12
  1994   358.96     0.12
  1995   360.97     0.12
  1996   362.74     0.12
  1997   363.88     0.12
  1998   366.84     0.12
  1999   368.54     0.12
  2000   369.71     0.12
  2001   371.32     0.12
  2002   373.45     0.12
  2003   375.98     0.12
  2004   377.70     0.12
  2005   379.98     0.12
  2006   382.09     0.12
  2007   384.02     0.12
  2008   385.83     0.12
  2009   387.64     0.12
  2010   390.10     0.12
  2011   391.85     0.12
  2012   394.06     0.12
  2013   396.74     0.12
  2014   398.81     0.12
  2015   401.01     0.12
  2016   404.41     0.12
  2017   406.76     0.12
  2018   408.72     0.12
  2019   411.65     0.12
  2020   414.21     0.12
  2021   416.41     0.12
  2022   418.53     0.12
  2023   421.08     0.12