diff --git a/src/cli/particle_extract.ipynb b/src/cli/particle_extract.ipynb
index b42d32c142..57e41e9599 100644
--- a/src/cli/particle_extract.ipynb
+++ b/src/cli/particle_extract.ipynb
@@ -2,7 +2,7 @@
  "cells": [
   {
    "cell_type": "code",
-   "execution_count": 1,
+   "execution_count": null,
    "id": "a2fce232-c7da-4666-a634-db934934696d",
    "metadata": {
     "tags": []
@@ -15,23 +15,12 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 2,
+   "execution_count": null,
    "id": "fb913a51-e436-44ab-ab9d-9a2a1e9860af",
    "metadata": {
     "tags": []
    },
-   "outputs": [
-    {
-     "data": {
-      "text/plain": [
-       "'HDF5'"
-      ]
-     },
-     "execution_count": 2,
-     "metadata": {},
-     "output_type": "execute_result"
-    }
-   ],
+   "outputs": [],
    "source": [
     "input_series = io.Series(\"/home/axel/src/openPMD/openPMD-example-datasets/example-3d/hdf5/data%T.h5\", io.Access.read_only)\n",
     "input_series.backend"
@@ -39,7 +28,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 3,
+   "execution_count": null,
    "id": "fab061d9-675d-4fd9-ad97-87304e008a8b",
    "metadata": {
     "tags": []
@@ -51,23 +40,12 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 4,
+   "execution_count": null,
    "id": "9320f003-5683-4527-b110-b684996e3e89",
    "metadata": {
     "tags": []
    },
-   "outputs": [
-    {
-     "data": {
-      "text/plain": [
-       "'ADIOS2'"
-      ]
-     },
-     "execution_count": 4,
-     "metadata": {},
-     "output_type": "execute_result"
-    }
-   ],
+   "outputs": [],
    "source": [
     "output_series = io.Series(\"particle_extract.bp\", io.Access.create)\n",
     "output_series.backend"
@@ -85,7 +63,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 5,
+   "execution_count": null,
    "id": "d9397148-84df-48ff-a0b2-c4c310d647b0",
    "metadata": {},
    "outputs": [],
@@ -120,7 +98,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 6,
+   "execution_count": null,
    "id": "7dc86882-ec8a-4a2f-8bfc-e3dcd0f56b95",
    "metadata": {
     "tags": []
@@ -133,7 +111,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 7,
+   "execution_count": null,
    "id": "f82f6170-c826-45e3-ae4c-321554613386",
    "metadata": {
     "tags": []
@@ -402,7 +380,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 8,
+   "execution_count": null,
    "id": "998d114f-47dc-48cd-a407-e7272a28b5e4",
    "metadata": {
     "tags": []
@@ -1015,7 +993,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 9,
+   "execution_count": null,
    "id": "5d46de8d-25f1-4150-9a52-e69a83054860",
    "metadata": {
     "tags": []
@@ -1058,7 +1036,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 10,
+   "execution_count": null,
    "id": "5002b0d1-c480-4625-a63d-009878e43794",
    "metadata": {
     "tags": []
@@ -1098,7 +1076,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 11,
+   "execution_count": null,
    "id": "af2f6e29-0b5a-406e-854a-f7ff1d77d9f6",
    "metadata": {
     "tags": []
@@ -1111,7 +1089,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 12,
+   "execution_count": null,
    "id": "1fd36fe4-bba0-4e88-9c56-0680b3ee610b",
    "metadata": {
     "tags": []
@@ -1149,7 +1127,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 13,
+   "execution_count": null,
    "id": "e1a9ca83-807e-419c-90a2-87b7cdadf9fe",
    "metadata": {
     "tags": []