diff --git a/tutorial/4_hextof_workflow.ipynb b/tutorial/4_hextof_workflow.ipynb
index f428bf71..59ed308d 100644
--- a/tutorial/4_hextof_workflow.ipynb
+++ b/tutorial/4_hextof_workflow.ipynb
@@ -47,7 +47,16 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "### Download and unpack data"
+    "### Get data paths"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "The paths are such that if you are on Maxwell, it uses those. Otherwise data is downloaded in current directory from Zenodo.\n",
+    "\n",
+    "Generally, if it is your beamtime, you can both read the raw data and write to processed directory. However, for the public data, you can not write to processed directory."
    ]
   },
   {
@@ -56,10 +65,15 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "# data_path can be defined and used to store the data in a specific location\n",
-    "dataset.get(\"Gd_W110\") # Put in Path to a storage of at least 10 GByte free space.\n",
-    "path = dataset.dir\n",
-    "print(path)"
+    "beamtime_dir = \"/asap3/flash/gpfs/pg2/2023/data/11019101\" # on Maxwell\n",
+    "if os.path.exists(beamtime_dir) and os.access(beamtime_dir, os.R_OK):\n",
+    "    path = beamtime_dir + \"/raw/hdf/offline/fl1user3\"\n",
+    "    buffer_path = \"Gd_W110/processed/\"\n",
+    "else:\n",
+    "    # data_path can be defined and used to store the data in a specific location\n",
+    "    dataset.get(\"Gd_W110\") # Put in Path to a storage of at least 10 GByte free space.\n",
+    "    path = dataset.dir\n",
+    "    buffer_path = path + \"/processed/\""
    ]
   },
   {
@@ -767,7 +781,7 @@
     "    constant=-1463.7, # this is time zero\n",
     "    flip_delay_axis=True, # invert the direction of the delay axis\n",
     "    columns=['bam'], # use the bam to offset the values\n",
-    "    weights=[0.001], # bam is in fs, delay in ps\n",
+    "    weights=[-0.001], # bam is in fs, delay in ps\n",
     "    preserve_mean=True # preserve the mean of the delay axis\n",
     ")"
    ]
@@ -968,7 +982,7 @@
  ],
  "metadata": {
   "kernelspec": {
-   "display_name": "python3",
+   "display_name": "Python 3.9",
    "language": "python",
    "name": "python3"
   },
@@ -986,5 +1000,5 @@
   }
  },
  "nbformat": 4,
- "nbformat_minor": 2
+ "nbformat_minor": 4
 }