diff --git a/modules/deeplearning/icing_fcn.py b/modules/deeplearning/icing_fcn.py
index c7c305f29a64c7a20df60423cd2a5da04444931d..f00eac311a7d702e5671744c4be268b8eb9fab48 100644
--- a/modules/deeplearning/icing_fcn.py
+++ b/modules/deeplearning/icing_fcn.py
@@ -557,7 +557,8 @@ class IcingIntensityFCN:
 
         # For testing, make better
         # print('total: ', len(tst_idxs))
-        # keep = flt_alt > 3000
+        # keep = flt_alt < 3400
+        # # keep = np.logical_and(flt_alt > 8000, flt_alt < 15000)
         # tst_idxs = tst_idxs[keep]
 
         self.num_data_samples = len(tst_idxs)