Attributes {
    IZ {
        Int32 gridtype 0;
        String units "unitless";
    }
    ISTA {
        Int32 gridtype 2;
        String units "ids";
    }
    partial_IZ {
        Int32 file_missing_value -9999;
        Float32 missing_value NaN;
        String long_name "$partialdiff sub IZ$ $partialdiff sub IZ$ tritium/helium age";
        String units "unitless";
    }
NC_GLOBAL {
    String Conventions "IRIDL";
}
}