diff --git a/lib/xmet/skew_t.py b/lib/xmet/skew_t.py
index 86128a2..783fe45 100644
--- a/lib/xmet/skew_t.py
+++ b/lib/xmet/skew_t.py
@@ -2,14 +2,11 @@ import math
 import cairo
 
 from typing    import Callable
-from itertools import product
 
-from xmet.list     import nearest
-from xmet.sounding import Sounding, SoundingSample
-from xmet.thermo   import pressure_height, loft_parcel, moist_lapse_rate, \
+from xmet.sounding import Sounding
+from xmet.thermo   import loft_parcel, moist_lapse_rate, \
                           LAPSE_RATE_DRY, PRESSURE_MAX, PRESSURE_MIN, \
-                          PRESSURE_STEP, mixing_ratio, saturated_mixing_ratio, \
-                          mixing_ratio_temp
+                          PRESSURE_STEP
 
 PRESSURE_LOG_MAX   = math.log(PRESSURE_MAX)
 PRESSURE_LOG_MIN   = math.log(PRESSURE_MIN)