#### 8.2.58.14 tblish.dataset.co2 ¶

Static Method: `out =` co2 `()` ¶

  Mauna Loa Atmospheric CO2 Concentration

  #### Description ¶

  Atmospheric concentrations of CO2 are expressed in parts per million (ppm) and reported in the preliminary 1997 SIO manometric mole fraction scale. Contains monthly observations from 1959 to 1997.

  #### Format ¶

  `date`

    Date of the month of the observation, as datetime.

  `co2`

    CO2 concentration (ppm).

  #### Details ¶

  The values for February, March and April of 1964 were missing and have been obtained by interpolating linearly between the values for January and May of 1964.

  #### Source ¶

  Keeling, C. D. and Whorf, T. P., Scripps Institution of Oceanography (SIO), University of California, La Jolla, California USA 92093-0220.

  ftp://cdiac.esd.ornl.gov/pub/maunaloa-co2/maunaloa.co2.

  #### References ¶

  Cleveland, W. S. (1993). `Visualizing Data`. New Jersey: Summit Press.

  #### Examples ¶

      t = tblish.dataset.co2;

      plot (datenum (t.date), t.co2);
      datetick ("x");
      xlabel ("Time"); ylabel ("Atmospheric concentration of CO2");
      title ("co2 data set");