diff --git a/modules/icing/pirep_goes.py b/modules/icing/pirep_goes.py
index 69f10c24d6b3a681b03820b9f52581d956b107fd..177e8bd2fd12466f4db2e6f9049da28229cb826e 100644
--- a/modules/icing/pirep_goes.py
+++ b/modules/icing/pirep_goes.py
@@ -832,8 +832,10 @@ def apply_qc_icing_pireps(icing_alt, cld_top_hgt, cld_phase, cld_opd, cld_mask,
 
 def apply_qc_no_icing_pireps(icing_alt, cld_top_hgt, cld_phase, cld_opd, cld_mask, bt_11um, solzen, satzen, day_night='ANY'):
     opd_thick_threshold = 2
+    opd_thin_threshold = 0.1
     if day_night == 'DAY':
         opd_thick_threshold = 20
+        opd_thin_threshold = 1
     closeness = 100.0  # meters
     num_obs = len(icing_alt)
     cld_mask = cld_mask.reshape((num_obs, -1))
@@ -858,27 +860,32 @@ def apply_qc_no_icing_pireps(icing_alt, cld_top_hgt, cld_phase, cld_opd, cld_mas
         keep_0 = np.logical_or(cld_mask[i,] == 2, cld_mask[i,] == 3)  # cloudy
         keep_1 = np.invert(np.isnan(cld_top_hgt[i,]))
         keep_2 = np.invert(np.isnan(bt_11um[i,]))
-        # keep_3 = np.invert(np.isnan(cld_opd[i,]))
-        # keep = keep_0 & keep_1 & keep_2 & keep_3
-        # num_keep = np.sum(keep)
-        keep = keep_0 & keep_1 & keep_2
+        keep_3 = np.invert(np.isnan(cld_opd[i,]))
+        keep = keep_0 & keep_1 & keep_2 & keep_3
         num_keep = np.sum(keep)
         if num_keep == 0:
             continue
 
+        # Test1
         keep = np.where(keep, cld_top_hgt[i,] > icing_alt[i], False)
 
-        # keep = np.where(keep,
-        #     np.invert((cld_phase[i,] == 4) &
-        #         np.logical_and(cld_top_hgt[i,]+closeness > icing_alt[i], cld_top_hgt[i,]-closeness < icing_alt[i])),
-        #              False)
-        # keep = np.where(keep, (cld_opd[i,] >= opd_thick_threshold) & (cld_phase[i,] == 4) & (cld_top_hgt[i,] > icing_alt[i]), False)
-        #
-        # keep = np.where(keep, np.invert((cld_phase[i,] == 4) & (cld_opd[i,] < 0.1) & (cld_top_hgt[i,] > icing_alt[i])), False)
-        #
-        keep = np.where(keep, bt_11um[i,] > 270.0, False)
-
-        keep = np.where(keep, bt_11um[i,] < 228.0, False)
+        # Test2
+        keep = np.where(keep,
+            ((cld_phase[i,] == 4) &
+                np.logical_and(cld_top_hgt[i,]+closeness > icing_alt[i], cld_top_hgt[i,]-closeness < icing_alt[i])),
+                     False)
+
+        # Test4
+        keep = np.where(keep, ((cld_phase[i,] == 4) & (cld_opd[i,] < opd_thin_threshold) & (cld_top_hgt[i,] > icing_alt[i])), False)
+
+        # Test5
+        keep = np.where(keep, (bt_11um[i,] > 270.0), False)
+
+        # Test6
+        keep = np.where(keep, (bt_11um[i,] < 228.0), False)
+
+        # Test3
+        keep = np.where(keep, np.invert((cld_opd[i,] >= opd_thick_threshold) & (cld_phase[i,] == 4) & (cld_top_hgt[i,] > icing_alt[i])), False)
 
         mask.append(keep)
         idxs.append(i)