diff --git a/modules/amv/caliop_clavrx_amv.py b/modules/amv/caliop_clavrx_amv.py
index 00d8d4813b8b841f90dc072789fd881230684825..822a49a052eff96f31d59ad61925c63f57ff344f 100644
--- a/modules/amv/caliop_clavrx_amv.py
+++ b/modules/amv/caliop_clavrx_amv.py
@@ -130,6 +130,7 @@ def match_calipso_clavrx_to_amvs(nom_time, calipso_clavrx_nc4, amv_files, calips
         alt_s = []
         for k in range(num_amvs):
             alt = pressure_to_altitude(param_nd[4, k], None, gfs_press, temp_prof_s[k, :])
+            print(alt.__class__)
             alt_s.append(alt)
         alt_s = np.array(alt_s)