diff --git a/perrot/series/profile.py b/perrot/series/profile.py
index d9658b2..7c6b240 100644
--- a/perrot/series/profile.py
+++ b/perrot/series/profile.py
@@ -146,31 +146,31 @@ def __init__(self, **overrides):
         
         # extract data
         self.extract_data()
-
-
+    
+    
     def get_limits(self, x_range=None, y_range=None, exact=False):
         """Gets current data limits using whole range or specified crops."""
-
+        
         # check data
         if self._limits is None:
             return None
-
+        
         # init limits
         limits = self._limits
-
+        
         # apply crop
         if x_range:
-
+            
             limits = utils.calc_limits_sorted(
                 data=(self._x_data, self._y_data),
                 crop=x_range,
                 extend=False,
                 interpolate=True)
-
+            
             if self.base not in (UNDEF, None) and limits[1] is not None:
                 limits[1][0] = min(self.base, limits[1][0])
                 limits[1][1] = max(self.base, limits[1][1])
-
+        
         # finalize limits
         return self.finalize_limits(limits, exact)