Attributes {
    M {
        String standard_name "realization";
        String long_name "Ensemble Member";
        Float32 pointwidth 1.0;
        Int32 gridtype 0;
        String units "unitless";
    }
    S {
        Int32 modulo 12;
        String standard_name "forecast_reference_time";
        String long_name "Forecast Start Time";
        Int32 pointwidth 0;
        String calendar "360";
        Int32 modulus 12;
        Int32 gridtype 1;
        String units "months since 1960-01-01";
    }
    mmdd {
        String units "unitless";
    }
NC_GLOBAL {
    String Conventions "IRIDL";
}
}