EnvironmentCH4 concentration in ppm from Environment Digest Table 1.29 Data and ResourcesDATA_CH4 concentration in ppmcsvCH4 concentration in ppm Preview Download SOURCE_CH4 concentration in ppmexcelCH4 concentration in ppm Download Download All CH4methane2017Environment Digest Table 1.29 FieldValue Modified Date2019-01-24 Release Date2019-01-24 Identifier5c01bc11-908e-44db-9ef3-1bc57cbb49dd LicenseCreative Commons Attribution Public Access LevelPublic