diff --git a/notebooks/Figure-5.ipynb b/notebooks/Figure-5.ipynb
index fd06de5..2c7dfd0 100644
--- a/notebooks/Figure-5.ipynb
+++ b/notebooks/Figure-5.ipynb
@@ -118,7 +118,7 @@
    "outputs": [],
    "source": [
     "def format_si(num, precision=0, suffixes=[\"\", \"K\", \"M\", \"G\", \"T\", \"P\"], show_suffix=False):\n",
-    "    m = sum([abs(num / 1000.0 ** x) >= 1 for x in range(1, len(suffixes))])\n",
+    "    m = sum([abs(num / 1000.0**x) >= 1 for x in range(1, len(suffixes))])\n",
     "    if show_suffix:\n",
     "        return f\"{num/1000.0**m:.{precision}f}{suffixes[m]}\"\n",
     "    else:\n",
diff --git a/notebooks/Figure-6.ipynb b/notebooks/Figure-6.ipynb
index ed696e6..dc6533e 100644
--- a/notebooks/Figure-6.ipynb
+++ b/notebooks/Figure-6.ipynb
@@ -359,7 +359,6 @@
     "\n",
     "\n",
     "for key in xys.keys():\n",
-    "\n",
     "    ax[1].annotate(\n",
     "        text=key,\n",
     "        xy=xys[key],\n",
diff --git a/notebooks/Statistics.ipynb b/notebooks/Statistics.ipynb
index b6fad79..24f74ef 100644
--- a/notebooks/Statistics.ipynb
+++ b/notebooks/Statistics.ipynb
@@ -113,7 +113,7 @@
    "outputs": [],
    "source": [
     "def format_si(num, precision=1, suffixes=[\"\", \"K\", \"M\", \"G\", \"T\", \"P\"], hide_suffix=False):\n",
-    "    m = sum([abs(num / 1000.0 ** x) >= 1 for x in range(1, len(suffixes))])\n",
+    "    m = sum([abs(num / 1000.0**x) >= 1 for x in range(1, len(suffixes))])\n",
     "    if hide_suffix:\n",
     "        return f\"{num/1000.0**m:.{precision}f}\"\n",
     "    else:\n",
diff --git a/notebooks/Supplementary-Figure-1.ipynb b/notebooks/Supplementary-Figure-1.ipynb
index 9e77ff5..884574e 100644
--- a/notebooks/Supplementary-Figure-1.ipynb
+++ b/notebooks/Supplementary-Figure-1.ipynb
@@ -74,7 +74,7 @@
    "outputs": [],
    "source": [
     "def format_si(num, precision=0, suffixes=[\"\", \"K\", \"M\", \"G\", \"T\", \"P\"], show_suffix=False):\n",
-    "    m = sum([abs(num / 1000.0 ** x) >= 1 for x in range(1, len(suffixes))])\n",
+    "    m = sum([abs(num / 1000.0**x) >= 1 for x in range(1, len(suffixes))])\n",
     "    if show_suffix:\n",
     "        return f\"{num/1000.0**m:.{precision}f}{suffixes[m]}\"\n",
     "    else:\n",