EnvironmentCO2 concentration in ppm from Environment Digest Table 1.28 Data and ResourcesDATA_CO2 concentration in ppmcsvCO2 concentration in ppm Preview Download SOURCE_CO2 concentration in ppmexcelCO2 concentration in ppm Download Download All 2016co2carbon DioxideEnvironment Digest Table 1.28 FieldValue Modified Date2019-01-24 Release Date2019-01-24 Identifier25a0572d-0e96-48bf-8582-d089ca8ccea7 LicenseCreative Commons Attribution Public Access LevelPublic