Dataset {
    Sequence {
        Float32 depth;
        Float32 longitude;
        Float32 latitude;
        Int32 _id;
        Sequence {
            Float32 BU_318;
            Float32 WD_410;
            Float32 T_25;
            Float32 LON_501;
            Float32 BD_311;
            Float32 VAR_221;
            Float32 BV_319;
            Float32 AZ_220;
            Float32 BP_915;
            Float32 WS_401;
            Float32 WV_423;
            Float64 time;
            Float32 V_321;
            Float32 LAT_500;
            Float32 U_320;
            Float32 AT_21;
            Float32 BS_301;
            Float32 WU_422;
        } time_series;
        Structure {
            String CREATION_DATE;
            String IMAGE5;
            String IMAGE6;
            String IMAGE7;
            String IMAGE8;
            String DELTA_T;
            String VAR_DESC;
            String PROJECT;
            String EXPERIMENT;
            String DATA_SUBTYPE;
            String WATER_MASS;
            String INST_TYPE;
            String DATA_ORIGIN;
            String DATA_CMNT;
            String VAR_FILL;
            String PROG_CMNT1;
            String PROG_CMNT2;
            String PROG_CMNT3;
            String PROG_CMNT4;
            String DATA_TYPE;
            String COORD_SYSTEM;
            String IMAGE1;
            String IMAGE2;
            String IMAGE3;
            String IMAGE4;
            String MOORING;
            String DESCRIPT;
            String COMPOSITE;
            String POS_CONST;
            String DEPTH_CONST;
            String FILL_FLAG;
            String DRIFTER;
            String WATER_DEPTH;
        } attributes;
        Structure {
            Structure {
                Float64 valid_range[2];
            } time;
        } variable_attributes;
    } location;
    Structure {
        Float32 lon_range[2];
        Float32 lat_range[2];
        Float32 depth_range[2];
        Float64 time_range[2];
    } constrained_ranges;
} arctic_time_drf;