Data from http://scrippsco2.ucsd.edu/data/atmospheric_co2/primary_mlo_co2_record but modified to only include date and CO2 for month with valid data.
forked from domoritz's block: Vega-Lite Carbon Dioxide in the Atmosphere
https://cdnjs.cloudflare.com/ajax/libs/vega/5.7.0/vega.min.js
https://cdnjs.cloudflare.com/ajax/libs/vega-lite/4.0.0-beta.9/vega-lite.min.js
https://cdnjs.cloudflare.com/ajax/libs/vega-embed/5.1.3/vega-embed.min.js