diff --git a/tour2_constant_bond/2_1_1_PO_observation.ipynb b/tour2_constant_bond/2_1_1_PO_observation.ipynb
index 8dcb8bb02a2fb0dbc738d0ac6403683805a08bcd..5458aaf17445de1d91ce55a3ed6f8b5d1f62d9de 100644
--- a/tour2_constant_bond/2_1_1_PO_observation.ipynb
+++ b/tour2_constant_bond/2_1_1_PO_observation.ipynb
@@ -181,7 +181,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 8,
+   "execution_count": 1,
    "metadata": {},
    "outputs": [],
    "source": [
@@ -202,7 +202,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 15,
+   "execution_count": 2,
    "metadata": {},
    "outputs": [],
    "source": [
@@ -220,13 +220,13 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 14,
+   "execution_count": 3,
    "metadata": {},
    "outputs": [
     {
      "data": {
       "application/vnd.jupyter.widget-view+json": {
-       "model_id": "cfff74a42c07443d9b5ef6a43e21ebb9",
+       "model_id": "8923ad4cb2e24703987b236d860af1a9",
        "version_major": 2,
        "version_minor": 0
       },
diff --git a/tour2_constant_bond/2_2_1_PO_configuration_explorer.ipynb b/tour2_constant_bond/2_2_1_PO_configuration_explorer.ipynb
index 74ab4a574e5f7e456c485a54346e5501c771c42d..785aba9df0dc85baad4f7f7c5da672e075bd39d7 100644
--- a/tour2_constant_bond/2_2_1_PO_configuration_explorer.ipynb
+++ b/tour2_constant_bond/2_2_1_PO_configuration_explorer.ipynb
@@ -148,7 +148,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 3,
+   "execution_count": 1,
    "metadata": {
     "tags": []
    },
@@ -156,7 +156,7 @@
     {
      "data": {
       "application/vnd.jupyter.widget-view+json": {
-       "model_id": "e46b59126c3740ab88ff70b5f3269f8b",
+       "model_id": "75c8e8c4daa54863bfd165a63519f61f",
        "version_major": 2,
        "version_minor": 0
       },
@@ -203,7 +203,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 4,
+   "execution_count": 2,
    "metadata": {
     "tags": []
    },
@@ -211,7 +211,7 @@
     {
      "data": {
       "application/vnd.jupyter.widget-view+json": {
-       "model_id": "2c694e0b52314c4e8b164ef961bf1876",
+       "model_id": "47161d7e292041b4abba7ef5184c8701",
        "version_major": 2,
        "version_minor": 0
       },