@sdetweil sorry I did not see this till now. If it happens again I’ll be sure to grab them. It happened on both mine and my dad’s mirror so I’ll let him know to give me a heads up too. Thanks !
I dont know much about what format the data source should be in but there are a lot of resources. Here are a few more from a qick google
https://www.kaggle.com/ucsandiego/carbon-dioxide
https://www.esrl.noaa.gov/gmd/ccgg/trends/monthly.html
https://climate.nasa.gov/vital-signs/carbon-dioxide/