diff --git a/modules/icing/util.py b/modules/icing/util.py
index 1f3e278bbe3aeda0d80ce85b5297042da5b862d0..fd6b48ab644d35a11048c41458288ffcf7b75b9d 100644
--- a/modules/icing/util.py
+++ b/modules/icing/util.py
@@ -328,12 +328,13 @@ def prepare_evaluate(h5f, name_list, satellite='GOES16', domain='FD', res_fac=1,
     return grd_dct_n, solzen, satzen, ll, cc
 
 
-flt_level_ranges_str = {k: None for k in range(5)}
+flt_level_ranges_str = {k: None for k in range(6)}
 flt_level_ranges_str[0] = '0_2000'
 flt_level_ranges_str[1] = '2000_4000'
 flt_level_ranges_str[2] = '4000_6000'
 flt_level_ranges_str[3] = '6000_8000'
 flt_level_ranges_str[4] = '8000_15000'
+flt_level_ranges_str[5] = 'CTH_layer'
 
 # flt_level_ranges_str = {k: None for k in range(1)}
 # flt_level_ranges_str[0] = 'column'
@@ -732,7 +733,7 @@ def run_icing_predict(clvrx_dir='/Users/tomrink/data/clavrx/RadC/', output_dir=h
                                               use_flight_altitude=use_flight_altitude)
 
     flight_levels = [0]
-    if (use_flight_altitude is True) and (use_max_cth_level is False):
+    if use_flight_altitude is True:
         flight_levels = [0, 1, 2, 3, 4]
 
     day_train_params, _, _ = get_training_parameters(day_night='DAY', l1b_andor_l2=l1b_andor_l2)