diff --git a/tutorials_and_tools/tutorials_and_tools/1 - Basics, Humidity, Design.ipynb b/tutorials_and_tools/tutorials_and_tools/1 - Basics, Humidity, Design.ipynb
index 29f30f6d..7b7d5608 100644
--- a/tutorials_and_tools/tutorials_and_tools/1 - Basics, Humidity, Design.ipynb	
+++ b/tutorials_and_tools/tutorials_and_tools/1 - Basics, Humidity, Design.ipynb	
@@ -25,7 +25,7 @@
    "outputs": [],
    "source": [
     "# if running on google colab, uncomment the next line and execute this cell to install the dependencies and prevent \"ModuleNotFoundError\" in later cells:\n",
-    "# !pip install pvdeg==0.1.1"
+    "# !pip install pvdeg==0.3.1"
    ]
   },
   {
diff --git a/tutorials_and_tools/tutorials_and_tools/1 - Basics, Humidity, Design.py b/tutorials_and_tools/tutorials_and_tools/1 - Basics, Humidity, Design.py
index a66ad157..0a5c4f71 100644
--- a/tutorials_and_tools/tutorials_and_tools/1 - Basics, Humidity, Design.py	
+++ b/tutorials_and_tools/tutorials_and_tools/1 - Basics, Humidity, Design.py	
@@ -18,7 +18,7 @@
 
 
 # if running on google colab, uncomment the next line and execute this cell to install the dependencies and prevent "ModuleNotFoundError" in later cells:
-# !pip install pvdeg==0.1.1
+# !pip install pvdeg==0.3.1
 
 
 # In[1]:
diff --git a/tutorials_and_tools/tutorials_and_tools/2 - Degradation.ipynb b/tutorials_and_tools/tutorials_and_tools/2 - Degradation.ipynb
index cd8a3720..82740d34 100644
--- a/tutorials_and_tools/tutorials_and_tools/2 - Degradation.ipynb	
+++ b/tutorials_and_tools/tutorials_and_tools/2 - Degradation.ipynb	
@@ -31,7 +31,7 @@
    "outputs": [],
    "source": [
     "# if running on google colab, uncomment the next line and execute this cell to install the dependencies and prevent \"ModuleNotFoundError\" in later cells:\n",
-    "# !pip install pvdeg==0.1.1"
+    "# !pip install pvdeg==0.3.1"
    ]
   },
   {
diff --git a/tutorials_and_tools/tutorials_and_tools/2 - Degradation.py b/tutorials_and_tools/tutorials_and_tools/2 - Degradation.py
index b4d19968..55c9cf71 100644
--- a/tutorials_and_tools/tutorials_and_tools/2 - Degradation.py	
+++ b/tutorials_and_tools/tutorials_and_tools/2 - Degradation.py	
@@ -24,7 +24,7 @@
 
 
 # if running on google colab, uncomment the next line and execute this cell to install the dependencies and prevent "ModuleNotFoundError" in later cells:
-# !pip install pvdeg==0.1.1
+# !pip install pvdeg==0.3.1
 
 
 # In[1]:
diff --git a/tutorials_and_tools/tutorials_and_tools/3 - Spectral Degradation.ipynb b/tutorials_and_tools/tutorials_and_tools/3 - Spectral Degradation.ipynb
index e0d6b1aa..ca810800 100644
--- a/tutorials_and_tools/tutorials_and_tools/3 - Spectral Degradation.ipynb	
+++ b/tutorials_and_tools/tutorials_and_tools/3 - Spectral Degradation.ipynb	
@@ -25,7 +25,7 @@
    "outputs": [],
    "source": [
     "# if running on google colab, uncomment the next line and execute this cell to install the dependencies and prevent \"ModuleNotFoundError\" in later cells:\n",
-    "# !pip install pvdeg==0.1.1"
+    "# !pip install pvdeg==0.3.1"
    ]
   },
   {
diff --git a/tutorials_and_tools/tutorials_and_tools/3 - Spectral Degradation.py b/tutorials_and_tools/tutorials_and_tools/3 - Spectral Degradation.py
index c64343fa..22669b43 100644
--- a/tutorials_and_tools/tutorials_and_tools/3 - Spectral Degradation.py	
+++ b/tutorials_and_tools/tutorials_and_tools/3 - Spectral Degradation.py	
@@ -18,7 +18,7 @@
 
 
 # if running on google colab, uncomment the next line and execute this cell to install the dependencies and prevent "ModuleNotFoundError" in later cells:
-# !pip install pvdeg==0.1.1
+# !pip install pvdeg==0.3.1
 
 
 # In[1]:
diff --git a/tutorials_and_tools/tutorials_and_tools/4 - Weather Database Access.ipynb b/tutorials_and_tools/tutorials_and_tools/4 - Weather Database Access.ipynb
index a138e18f..e03fe911 100644
--- a/tutorials_and_tools/tutorials_and_tools/4 - Weather Database Access.ipynb	
+++ b/tutorials_and_tools/tutorials_and_tools/4 - Weather Database Access.ipynb	
@@ -52,7 +52,7 @@
    "outputs": [],
    "source": [
     "# if running on google colab, uncomment the next line and execute this cell to install the dependencies and prevent \"ModuleNotFoundError\" in later cells:\n",
-    " # !pip install pvdeg==0.1.1"
+    " # !pip install pvdeg==0.3.1"
    ]
   },
   {
diff --git a/tutorials_and_tools/tutorials_and_tools/4 - Weather Database Access.py b/tutorials_and_tools/tutorials_and_tools/4 - Weather Database Access.py
index 57325280..8cf1f531 100644
--- a/tutorials_and_tools/tutorials_and_tools/4 - Weather Database Access.py	
+++ b/tutorials_and_tools/tutorials_and_tools/4 - Weather Database Access.py	
@@ -35,7 +35,7 @@
 
 
 # if running on google colab, uncomment the next line and execute this cell to install the dependencies and prevent "ModuleNotFoundError" in later cells:
- # !pip install pvdeg==0.1.1
+ # !pip install pvdeg==0.3.1
 
 
 # In[1]:
diff --git a/tutorials_and_tools/tutorials_and_tools/LETID - Accelerated Test.ipynb b/tutorials_and_tools/tutorials_and_tools/LETID - Accelerated Test.ipynb
index 9c8f1364..37a08780 100644
--- a/tutorials_and_tools/tutorials_and_tools/LETID - Accelerated Test.ipynb	
+++ b/tutorials_and_tools/tutorials_and_tools/LETID - Accelerated Test.ipynb	
@@ -29,7 +29,7 @@
    "outputs": [],
    "source": [
     "# if running on google colab, uncomment the next line and execute this cell to install the dependencies and prevent \"ModuleNotFoundError\" in later cells:\n",
-    "# !pip install pvdeg==0.1.1"
+    "# !pip install pvdeg==0.3.1"
    ]
   },
   {
diff --git a/tutorials_and_tools/tutorials_and_tools/LETID - Accelerated Test.py b/tutorials_and_tools/tutorials_and_tools/LETID - Accelerated Test.py
index 47d72753..8ef9b735 100644
--- a/tutorials_and_tools/tutorials_and_tools/LETID - Accelerated Test.py	
+++ b/tutorials_and_tools/tutorials_and_tools/LETID - Accelerated Test.py	
@@ -23,7 +23,7 @@
 
 
 # if running on google colab, uncomment the next line and execute this cell to install the dependencies and prevent "ModuleNotFoundError" in later cells:
-# !pip install pvdeg==0.1.1
+# !pip install pvdeg==0.3.1
 
 
 # In[1]:
diff --git a/tutorials_and_tools/tutorials_and_tools/LETID - Outdoor LETID.ipynb b/tutorials_and_tools/tutorials_and_tools/LETID - Outdoor LETID.ipynb
index 9b8f9348..433647eb 100644
--- a/tutorials_and_tools/tutorials_and_tools/LETID - Outdoor LETID.ipynb	
+++ b/tutorials_and_tools/tutorials_and_tools/LETID - Outdoor LETID.ipynb	
@@ -31,7 +31,7 @@
    "outputs": [],
    "source": [
     "# if running on google colab, uncomment the next line and execute this cell to install the dependencies and prevent \"ModuleNotFoundError\" in later cells:\n",
-    "# !pip install pvdeg==0.1.1"
+    "# !pip install pvdeg==0.3.1"
    ]
   },
   {
diff --git a/tutorials_and_tools/tutorials_and_tools/LETID - Outdoor LETID.py b/tutorials_and_tools/tutorials_and_tools/LETID - Outdoor LETID.py
index e371b22f..5b87bbda 100644
--- a/tutorials_and_tools/tutorials_and_tools/LETID - Outdoor LETID.py	
+++ b/tutorials_and_tools/tutorials_and_tools/LETID - Outdoor LETID.py	
@@ -25,7 +25,7 @@
 
 
 # if running on google colab, uncomment the next line and execute this cell to install the dependencies and prevent "ModuleNotFoundError" in later cells:
-# !pip install pvdeg==0.1.1
+# !pip install pvdeg==0.3.1
 
 
 # In[1]:
diff --git a/tutorials_and_tools/tutorials_and_tools/LETID - Outdoor Scenario Based on Accelerated Test Result.ipynb b/tutorials_and_tools/tutorials_and_tools/LETID - Outdoor Scenario Based on Accelerated Test Result.ipynb
index a0b04591..2f9f0dc8 100644
--- a/tutorials_and_tools/tutorials_and_tools/LETID - Outdoor Scenario Based on Accelerated Test Result.ipynb	
+++ b/tutorials_and_tools/tutorials_and_tools/LETID - Outdoor Scenario Based on Accelerated Test Result.ipynb	
@@ -35,7 +35,7 @@
    "outputs": [],
    "source": [
     "# if running on google colab, uncomment the next line and execute this cell to install the dependencies and prevent \"ModuleNotFoundError\" in later cells:\n",
-    "# !pip install pvdeg==0.1.1"
+    "# !pip install pvdeg==0.3.1"
    ]
   },
   {
@@ -46,6 +46,7 @@
    "source": [
     "from pvdeg import letid, collection, utilities, DATA_DIR\n",
     "\n",
+    "import pvdeg\n",
     "import pvlib\n",
     "import os\n",
     "import pandas as pd\n",
diff --git a/tutorials_and_tools/tutorials_and_tools/LETID - Outdoor Scenario Based on Accelerated Test Result.py b/tutorials_and_tools/tutorials_and_tools/LETID - Outdoor Scenario Based on Accelerated Test Result.py
index ddfee56c..48f69cd8 100644
--- a/tutorials_and_tools/tutorials_and_tools/LETID - Outdoor Scenario Based on Accelerated Test Result.py	
+++ b/tutorials_and_tools/tutorials_and_tools/LETID - Outdoor Scenario Based on Accelerated Test Result.py	
@@ -29,7 +29,7 @@
 
 
 # if running on google colab, uncomment the next line and execute this cell to install the dependencies and prevent "ModuleNotFoundError" in later cells:
-# !pip install pvdeg==0.1.1
+# !pip install pvdeg==0.3.1
 
 
 # In[1]:
@@ -37,6 +37,7 @@
 
 from pvdeg import letid, collection, utilities, DATA_DIR
 
+import pvdeg
 import pvlib
 import os
 import pandas as pd
diff --git a/tutorials_and_tools/tutorials_and_tools/LETID - Passivated Wafer.ipynb b/tutorials_and_tools/tutorials_and_tools/LETID - Passivated Wafer.ipynb
index 33dd7942..499704fa 100644
--- a/tutorials_and_tools/tutorials_and_tools/LETID - Passivated Wafer.ipynb	
+++ b/tutorials_and_tools/tutorials_and_tools/LETID - Passivated Wafer.ipynb	
@@ -29,7 +29,7 @@
    "outputs": [],
    "source": [
     "# if running on google colab, uncomment the next line and execute this cell to install the dependencies and prevent \"ModuleNotFoundError\" in later cells:\n",
-    "# !pip install pvdeg==0.1.1"
+    "# !pip install pvdeg==0.3.1"
    ]
   },
   {
@@ -39,7 +39,7 @@
    "outputs": [],
    "source": [
     "from pvdeg import letid, collection, utilities, DATA_DIR\n",
-    "\n",
+    "import pvdeg\n",
     "import os\n",
     "import pandas as pd\n",
     "import numpy as np\n",
diff --git a/tutorials_and_tools/tutorials_and_tools/LETID - Passivated Wafer.py b/tutorials_and_tools/tutorials_and_tools/LETID - Passivated Wafer.py
index be44721a..66a0b0d3 100644
--- a/tutorials_and_tools/tutorials_and_tools/LETID - Passivated Wafer.py	
+++ b/tutorials_and_tools/tutorials_and_tools/LETID - Passivated Wafer.py	
@@ -23,14 +23,14 @@
 
 
 # if running on google colab, uncomment the next line and execute this cell to install the dependencies and prevent "ModuleNotFoundError" in later cells:
-# !pip install pvdeg==0.1.1
+# !pip install pvdeg==0.3.1
 
 
 # In[1]:
 
 
 from pvdeg import letid, collection, utilities, DATA_DIR
-
+import pvdeg
 import os
 import pandas as pd
 import numpy as np
diff --git a/tutorials_and_tools/tutorials_and_tools/Monte Carlo - Arrhenius.ipynb b/tutorials_and_tools/tutorials_and_tools/Monte Carlo - Arrhenius.ipynb
index 8b55828e..0ef838c9 100644
--- a/tutorials_and_tools/tutorials_and_tools/Monte Carlo - Arrhenius.ipynb	
+++ b/tutorials_and_tools/tutorials_and_tools/Monte Carlo - Arrhenius.ipynb	
@@ -22,7 +22,7 @@
    "outputs": [],
    "source": [
     "# if running on google colab, uncomment the next line and execute this cell to install the dependencies and prevent \"ModuleNotFoundError\" in later cells:\n",
-    "# !pip install pvdeg==0.2.0"
+    "# !pip install pvdeg==0.3.1"
    ]
   },
   {
diff --git a/tutorials_and_tools/tutorials_and_tools/Monte Carlo - Arrhenius.py b/tutorials_and_tools/tutorials_and_tools/Monte Carlo - Arrhenius.py
index 8cb4e9aa..9ebd8652 100644
--- a/tutorials_and_tools/tutorials_and_tools/Monte Carlo - Arrhenius.py	
+++ b/tutorials_and_tools/tutorials_and_tools/Monte Carlo - Arrhenius.py	
@@ -15,7 +15,7 @@
 
 
 # if running on google colab, uncomment the next line and execute this cell to install the dependencies and prevent "ModuleNotFoundError" in later cells:
-# !pip install pvdeg==0.2.0
+# !pip install pvdeg==0.3.1
 
 
 # In[1]:
diff --git a/tutorials_and_tools/tutorials_and_tools/Monte Carlo - Standoff.ipynb b/tutorials_and_tools/tutorials_and_tools/Monte Carlo - Standoff.ipynb
index d130dd04..7aa22099 100644
--- a/tutorials_and_tools/tutorials_and_tools/Monte Carlo - Standoff.ipynb	
+++ b/tutorials_and_tools/tutorials_and_tools/Monte Carlo - Standoff.ipynb	
@@ -17,7 +17,7 @@
    "outputs": [],
    "source": [
     "# if running on google colab, uncomment the next line and execute this cell to install the dependencies and prevent \"ModuleNotFoundError\" in later cells:\n",
-    "# !pip install pvdeg==0.2.0"
+    "# !pip install pvdeg==0.3.1"
    ]
   },
   {
diff --git a/tutorials_and_tools/tutorials_and_tools/Monte Carlo - Standoff.py b/tutorials_and_tools/tutorials_and_tools/Monte Carlo - Standoff.py
index c122950a..eab9eea8 100644
--- a/tutorials_and_tools/tutorials_and_tools/Monte Carlo - Standoff.py	
+++ b/tutorials_and_tools/tutorials_and_tools/Monte Carlo - Standoff.py	
@@ -11,7 +11,7 @@
 
 
 # if running on google colab, uncomment the next line and execute this cell to install the dependencies and prevent "ModuleNotFoundError" in later cells:
-# !pip install pvdeg==0.2.0
+# !pip install pvdeg==0.3.1
 
 
 # In[1]: