netcdf files/d651080/NAO/NAO_stationbased_ERA5_initmon02.nc {
  dimensions:
    time = 12;
    init_year = 51;
  variables:
    long time(time=12);
      :units = "days since 1970-02-15 00:00:00";
      :calendar = "proleptic_gregorian";

    float NAO(init_year=51, time=12);
      :_FillValue = NaNf; // float

    long init_year(init_year=51);

  // global attributes:
}