function ii = ancil2_ind()


ii.watrk_hd_misalign  = 1;
ii.watrk_scale_factor = 2;
ii.botrk_hd_misalign  = 3;
ii.botrk_scale_factor = 4;
ii.pit_misalign       = 5;
ii.rol_misalign       = 6;
ii.unused1            = 7;
ii.last_temp          = 8;
ii.last_heading       = 9;
ii.last_pitch         = 10;
ii.last_roll          = 11;
ii.mn_pitch           = 12;
ii.mn_roll            = 13;
ii.std_temp           = 14;
ii.std_heading        = 15;
ii.std_pitch          = 16;
ii.std_roll           = 17;
ii.ocean_depth        = 18;
ii.max_amp_bin        = 19;
ii.last_good_bin      = 20;
ii.unused2            = 21;
ii.unused3            = 22;
ii.unused4            = 23;

