diff --git a/doc/Tutorials/Pandas_Seaborn.ipynb b/doc/Tutorials/Pandas_Seaborn.ipynb
index ba009f1e21..45ac8eb15f 100644
--- a/doc/Tutorials/Pandas_Seaborn.ipynb
+++ b/doc/Tutorials/Pandas_Seaborn.ipynb
@@ -1,7 +1,7 @@
 {
  "metadata": {
   "name": "",
-  "signature": "sha256:0e7307ca81daa4d37eb9ae1175763357264aef587982d00fc433573029073063"
+  "signature": "sha256:ed31c3ab35bef70b4db88b5964a14c5f4d11c73b2bd2d3a881cd086d376dd25c"
  },
  "nbformat": 3,
  "nbformat_minor": 0,
@@ -80,10 +80,11 @@
      "outputs": []
     },
     {
-     "cell_type": "markdown",
+     "cell_type": "heading",
+     "level": 2,
      "metadata": {},
      "source": [
-      "# Visualizing Distributions of Data  <a id='Histogram'/>"
+      "Visualizing Distributions of Data <a id='Histogram'/>"
      ]
     },
     {
@@ -175,10 +176,11 @@
      ]
     },
     {
-     "cell_type": "markdown",
+     "cell_type": "heading",
+     "level": 2,
      "metadata": {},
      "source": [
-      "# Working with ``TimeSeries`` data"
+      "Working with ``TimeSeries`` data"
      ]
     },
     {
@@ -305,10 +307,11 @@
      "outputs": []
     },
     {
-     "cell_type": "markdown",
+     "cell_type": "heading",
+     "level": 2,
      "metadata": {},
      "source": [
-      "# Working with pandas DataFrames"
+      "Working with pandas DataFrames"
      ]
     },
     {
@@ -362,10 +365,11 @@
      "outputs": []
     },
     {
-     "cell_type": "markdown",
+     "cell_type": "heading",
+     "level": 3,
      "metadata": {},
      "source": [
-      "## Flight passenger data"
+      "Flight passenger data"
      ]
     },
     {
@@ -388,10 +392,11 @@
      "outputs": []
     },
     {
-     "cell_type": "markdown",
+     "cell_type": "heading",
+     "level": 3,
      "metadata": {},
      "source": [
-      "### Tipping data  <a id='Regression'/>"
+      "Tipping data  <a id='Regression'/>"
      ]
     },
     {
@@ -421,10 +426,11 @@
      ]
     },
     {
-     "cell_type": "markdown",
+     "cell_type": "heading",
+     "level": 3,
      "metadata": {},
      "source": [
-      "### Iris Data  <a id='Box'/>"
+      "Iris Data  <a id='Box'/>"
      ]
     },
     {
@@ -464,10 +470,11 @@
      "outputs": []
     },
     {
-     "cell_type": "markdown",
+     "cell_type": "heading",
+     "level": 3,
      "metadata": {},
      "source": [
-      "## Titanic passenger data  <a id='Correlation'/>"
+      "Titanic passenger data  <a id='Correlation'/>"
      ]
     },
     {