diff --git a/lib/xmet/sounding.py b/lib/xmet/sounding.py
index 62b8529..e71c839 100644
--- a/lib/xmet/sounding.py
+++ b/lib/xmet/sounding.py
@@ -39,7 +39,7 @@ class SoundingSample():
 
     def mixing_ratio(self) -> float:
         e = self.vapor_pressure()
-        
+
         return 621.97 * (e / (self.pressure - e))
 
     def saturated_mixing_ratio(self) -> float: