diff --git a/optim_esm_tools/analyze/tipping_criteria.py b/optim_esm_tools/analyze/tipping_criteria.py
index b2105ffb..1418ef49 100644
--- a/optim_esm_tools/analyze/tipping_criteria.py
+++ b/optim_esm_tools/analyze/tipping_criteria.py
@@ -1,4 +1,3 @@
-
 from .xarray_tools import apply_abs, _native_date_fmt
 from optim_esm_tools.utils import check_accepts
 import xarray as xr
@@ -171,7 +170,6 @@ def max_derivative(
     data_array = _remove_any_none_times(data_set[var_name], time_var)
     result = data_array.differentiate(time_var).max(dim=time_var) * _SECONDS_TO_YEAR
 
-
     var_unit = data_array.attrs.get('units', '{units}')
     name = data_array.attrs.get(rename_to, variable)
 
diff --git a/optim_esm_tools/plotting/map_maker.py b/optim_esm_tools/plotting/map_maker.py
index 16c90e1c..bd5b1621 100644
--- a/optim_esm_tools/plotting/map_maker.py
+++ b/optim_esm_tools/plotting/map_maker.py
@@ -201,6 +201,7 @@ def _ts_single(time_val, mean, std, plot_kw, fill_kw):
 
             (mean - std).plot(color=l[0]._color, alpha=0.4)
             (mean + std).plot(color=l[0]._color, alpha=0.4)
+
     def _ts(
         self,
         variable,
@@ -283,7 +284,6 @@ def _ddt_ts(
             ds = self.data_set
         variable_rm = f'{variable}_run_mean_{running_mean}'
 
-
         da = ds[variable]
         da_rm = ds[variable_rm]