diff --git a/uvdat/core/tasks/netcdf.py b/uvdat/core/tasks/netcdf.py
index 73d35e8..16b0611 100644
--- a/uvdat/core/tasks/netcdf.py
+++ b/uvdat/core/tasks/netcdf.py
@@ -115,7 +115,11 @@ def create_netcdf_data_layer(file_item, metadata):
                 cftime.Datetime360Day,
                 cftime.DatetimeJulian,
             )
-            if variable.size > 0 and variable.values.ndim > 0 and isinstance(variable.values[0], cftime_types):
+            if (
+                variable.size > 0
+                and variable.values.ndim > 0
+                and isinstance(variable.values[0], cftime_types)
+            ):
                 vals = []
                 for item in variable.values:
                     dt = item