a typo of tab vs space

Author: meihuisu

pycvm/elevation_horizontal_slice.py

@@ -151,7 +151,7 @@ def getplotvals(self, mproperty="vs"):
                 data=data1d[0].tolist()
             print("\nUsing --> "+self.datafile) 
 
-	else: 
+        else: 
             #  Generate a list of points to pass to UCVM.
             ucvmpoints = []
             for y in xrange(0, self.num_y):