SUMMARY "SUM_DATA_PRODUCT" "CH4FLASK " "SUM_DATA_SET" "GRNHS-GASES " "SUM_DATATYPE" "CH4-FLASK " "ARCHIVE_NAME" "NCDS " "ARCHIVE_STATUS" "Available " "DS_DESCRIPTION" "Concentrations of atmospheric greenhouse effect gases " "DT_DESCRIPTION" "Flask Samples Analyzed for Methane " "SUM_BEGIN_DATE" "01-Jan-1983 " "SUM_END_DATE" "31-Dec-1985 " "SUM_PROCESS_LEVEL" "3" "SPATIAL1" "Point data measured at 21 stations " "SPATIAL2" " " "SPATIAL3" "station " "SPATIAL4" " " "TEMPORAL1" "January, 1983 - December, 1985 " "TEMPORAL2" " " "TEMPORAL3" "Monthly averages " "TEMPORAL4" " " "PRODUCT1" "Available through NCDS in Common Data Format (CDF). " "PRODUCT2" "Available on GEDEX CD-ROM. " "PRODUCT3" "21 ASCII files on MS-DOS format floppy disk " "PRODUCT4" " " EOF PARAMETERS "CH4" "Methane Concentration" "ppbv" EOF SOURCES "FIELD-OBS" "CH4-ANALYZER" EOF