diff --git a/doc/Dask DSSC module binning.ipynb b/doc/Dask DSSC module binning.ipynb
index 131660cd7d88334fbf7f13f12c86a6f54921e635..4a75edb22b2bcfe6942a109bbd07f8a96eb707f9 100644
--- a/doc/Dask DSSC module binning.ipynb	
+++ b/doc/Dask DSSC module binning.ipynb	
@@ -190,7 +190,8 @@
     "        # https://github.com/pydata/xarray/issues/2028\n",
     "        sub_r = r.sel(sa3_pId=(r.pp == p))\n",
     "        \n",
-    "        res = sub_r.groupby('bin_'+xaxis).mean()\n",
+    "        # calculate mean on bin, then mean to remove the dimension\n",
+    "        res = sub_r.groupby('bin_'+xaxis).mean().mean(['sa3_pId'])\n",
     "\n",
     "        if bin_data is None:\n",
     "            bin_data = res\n",