anchor.diff:  Spike or step,At least one from group,ICDC_aqc_07_spike_check,
   Density,At least one from group,CoTeDe_Argo_density_inversion,
   Density,At least one from group,EN_stability_check,
  +Climatology,At least one from group,AOML_climatology_test,
   Climatology,At least one from group,CoTeDe_GTSPP_WOA_normbias,
   Climatology,At least one from group,CoTeDe_tukey53H_norm,
   Climatology,At least one from group,CoTeDe_WOA_normbias,
   Climatology,At least one from group,EN_background_check,
   Climatology,At least one from group,EN_std_lev_bkg_and_buddy_check,
   Climatology,At least one from group,ICDC_aqc_09_local_climatology_check,
  +Constant values,At least one from group,AOML_constant,
   Constant values,At least one from group,CSIRO_constant_bottom,
   Constant values,At least one from group,EN_constant_value_check,
   Constant values,At least one from group,ICDC_aqc_05_stuck_value,
  
positive.code: Range,At least one from group,ICDC_aqc_02_crude_range,
  Range,At least one from group,ICDC_aqc_06_n_temperature_extrema,
  Range,At least one from group,WOD_range_check,
  Gradient,At least one from group,Argo_gradient_test,
  Gradient,At least one from group,CoTeDe_gradient,
  Gradient,At least one from group,CoTeDe_GTSPP_gradient,
  
negative.code: Near surface XBT data,Remove rejected levels,CSIRO_depth,Standard reject of XBT data < 3.6 m
  Wire break,Remove below reject,CSIRO_wire_break,Expert opinion is that this is highly reliable at detecting XBT wire breaks
  Depth above surface,Remove rejected levels,ICDC_aqc_01_level_order,Flags depths less than zero (plus preprocessing for other ICDC checks)
  Range,At least one from group,AOML_gross,
  Range,At least one from group,Argo_global_range_check,
  Range,At least one from group,Argo_regional_range_test,
  Range,At least one from group,CoTeDe_GTSPP_global_range,
  