external_counts.hdf5
  entry:NXentry
    @NX_class = NXentry
    instrument:NXinstrument
      @NX_class = NXinstrument
      detector:NXdetector
        @NX_class = NXdetector
        counts:int32[31] = [1037, 1318, 1704, '...', 1321]
          @units = counts
        two_theta:float64[31] = [17.926079999999999, 17.925909999999998, 17.925750000000001, '...', 17.92108]
          @units = degrees
          @file = external_angles.hdf5
          @path = /angles