dbname:             ../adcpdb/a_ex
        output:             ./vector
        step_size:          1        /* must be 1 for navigation */
        ndepth:             128
        time_ranges:        separate
        year_base=          2018

        option_list:
            pg_min=                50
            reference:             final_ship_ref
            regrid:                average
               depth
               grid_list number=  6
               boundaries:        19 40 60 80 100 120 
                                  /* The 1st boundary must */
                                  /* start at or below the */
                                  /* shallowest depth bin  */
         vector:
           minimum_npts=        2
          flag_mask:        ALL_BITS
            end
          end                     /* one big time range (if "single") or if "separate", */
     @a_ex.tmg           /* explicit time ranges or of the form "@gridfile" */