Attributes {
    T {
        Float32 pointwidth 1.0;
        String calendar "360";
        Int32 gridtype 0;
        String units "months since 1960-01-01";
    }
    co2 {
        String long_name "co2";
        String units "ppmv";
        String iridl:hasSemantics "iridl:AtmosphericCO2";
        Float32 file_missing_value -99.989998;
        Float32 missing_value -99.989998;
    }
NC_GLOBAL {
    URL dataset_documentation.html "http://iridl.ldeo.columbia.edu/SOURCES/.KEELING/.MAUNA_LOA/.dataset_documentation.html";
    String references "Keeling_etal1996 Keeling_etal1989 Keeling_etal1995";
    String Conventions "IRIDL";
}
}