diff --git a/src/sp2xr/distribution.py b/src/sp2xr/distribution.py
index f1ef593..fc0f956 100644
--- a/src/sp2xr/distribution.py
+++ b/src/sp2xr/distribution.py
@@ -259,10 +259,15 @@ def process_hist_and_dist_partition(
     # expand list-of-counts -> wide matrix (one col per bin)
     max_list_length = len(bin_ctrs)
     if df_resampled.empty:
-        # IMPORTANT: use the resampled time index so schema matches later joins
+        """# IMPORTANT: use the resampled time index so schema matches later joins
         idx = flow_dt.index
         columns = [f"result_{i}" for i in range(max_list_length)]
-        ddf_hist = pd.DataFrame(np.nan, columns=columns, index=idx)
+        ddf_hist = pd.DataFrame(np.nan, columns=columns, index=idx)"""
+
+        ddf_hist = pd.DataFrame(
+            columns=[f"result_{i}" for i in range(max_list_length)],
+            index=pd.DatetimeIndex([], name=df.index.name),
+        )
     else:
         ddf_hist = df_resampled["result"].apply(pd.Series)
         ddf_hist.index = df_resampled.index