Data downloaded from https://gml.noaa.gov/webdata/ccgg/trends/co2/co2_mm_mlo.txt on 1/25/2025

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# 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: Sun Jan  5 03:55:25 2025
# 
# 
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# 
# 
# 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).
# Monthly mean CO2 constructed from daily mean values.
# Scripps data downloaded from http://scrippsco2.ucsd.edu/data/atmospheric_co2
# Monthly values are corrected to center of month based on average seasonal
# cycle. Missing days can be asymmetric which would produce a high or low bias.
# Missing months have been interpolated, for NOAA data indicated by negative stdev
# and uncertainty. We have no information for SIO data about Ndays, stdv, unc
# so that they are also indicated by negative numbers
#
# 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.