diff --git a/lib/xmet/thermo.py b/lib/xmet/thermo.py
index 2631782..7df6954 100644
--- a/lib/xmet/thermo.py
+++ b/lib/xmet/thermo.py
@@ -52,12 +52,12 @@ def mixing_ratio_temp(ratio: float, pressure: float) -> float:
     Return the temperature, in degrees celsius, of a given mixing ratio at a
     specified pressure, in millibar.
     """
-    c1 = 0.0498646455
-    c2 = 2.4082965
-    c3 = 7.07475
+    c1 =  0.0498646455
+    c2 =  2.4082965
+    c3 =  7.07475
     c4 = 38.9114
-    c5 = 0.0915
-    c6 = 1.2035
+    c5 =  0.0915
+    c6 =  1.2035
 
     x = math.log10(ratio * pressure / (622.0 + ratio))