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    • Jun 19, 2019
    • 1 min read

Up-to-date weekly average CO2 at Mauna Loa


Week beginning on June 9, 2019:  413.98 ppm

Weekly value from 1 year ago:  411.22 ppm

Weekly value from 10 years ago:  390.17 ppm

Last updated: June 19, 2019



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