diff --git a/README.md b/README.md
index 5b0f4ff..1c01d53 100644
--- a/README.md
+++ b/README.md
@@ -47,11 +47,9 @@ python: >=3.9
 pip install phitter
 ```
 
-
-
 ## Usage
 
-### ***1. Fit Notebook's Tutorials***
+### **_1. Fit Notebook's Tutorials_**
 
 |             Tutorial             |                                                                                                                  Notebooks                                                                                                                   |
 | :------------------------------: | :------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------: |
@@ -61,23 +59,16 @@ pip install phitter
 |   **Fit Specific Disribution**   | <a target="_blank" href="https://colab.research.google.com/github/phitterio/phitter-kernel/blob/main/examples/fit_specefic_distribution.ipynb"><img src="https://colab.research.google.com/assets/colab-badge.svg" alt="Open In Colab"/></a> |
 |     **Working Distribution**     |   <a target="_blank" href="https://colab.research.google.com/github/phitterio/phitter-kernel/blob/main/examples/working_distribution.ipynb"><img src="https://colab.research.google.com/assets/colab-badge.svg" alt="Open In Colab"/></a>    |
 
-### ***2. Simulation Notebook's Tutorials***
-pending
-
-## Documentation
-
-
-
-
+### **_2. Simulation Notebook's Tutorials_**
 
+Pending
 
+## Documentation
 
 <details>
 
 <summary style="font-size: 16px; font-weight: bold;">Documentation Fit Module</summary>
 
-
-
 ### General Fit
 
 ```python
@@ -489,19 +480,9 @@ distribution.mode # -> 733.3333333333333
 
 </details>
 
-
-
-
-
-
-
-
-
 <details>
 <summary style="font-size: 16px; font-weight: bold;">Documentation Simulation Module</summary>
 
-
-
 ## Process Simulation
 
 This will help you to understand your processes. To use it, run the following line
@@ -518,8 +499,8 @@ simulation = simulation.ProcessSimulation()
 
 There are two ways to add processes to your simulation instance:
 
--   Adding a **process _without_ preceding process (new branch)**
--   Adding a **process _with_ preceding process (with previous ids)**
+- Adding a **process _without_ preceding process (new branch)**
+- Adding a **process _with_ preceding process (with previous ids)**
 
 #### Process _without_ preceding process (new branch)
 
diff --git a/tests/pytest/test_process_simulation.py b/tests/pytest/test_process_simulation.py
index 7f6d9f6..10d06b9 100644
--- a/tests/pytest/test_process_simulation.py
+++ b/tests/pytest/test_process_simulation.py
@@ -1,5 +1,6 @@
 import pytest
 import phitter
+import pandas as pd
 
 
 # Test that adding a process with a wrong function name raises a ValueError
@@ -55,10 +56,11 @@ def test_simulation_running():
         previous_ids=["fifth", "sixth", "ni_idea_2"],
     )
 
-    result = simulation.run(10)
+    result = simulation.run(100)
 
-    assert len(result) == 10
-    assert isinstance(result, list)
+    assert isinstance(result, pd.DataFrame)
+    assert len(result["Total Simulation Time"]) == 100
+    assert len(result.columns) == 11
 
 
 # Test to check if the confidence interval results are as expected
@@ -103,5 +105,5 @@ def test_simulation_confidence_interval():
 
     result = simulation.run_confidence_interval(number_of_simulations=100)
 
-    assert len(result) == 4
-    assert isinstance(result, tuple)
+    assert len(result.columns) == 4
+    assert isinstance(result, pd.DataFrame)