diff --git a/doc/README.md b/doc/README.md
index 173b8318..386e643b 100644
--- a/doc/README.md
+++ b/doc/README.md
@@ -1521,6 +1521,11 @@ The operating principle of this reader differs slightly from that of the global
     <em>Result of list_map_reader (figure generated with <code>main_list_map_reader</code> function of <code><a href="https://github.com/CEA-MetroCarac/PySSPFM/blob/main/PySSPFM/toolbox/list_map_reader.py">toolbox/list_map_reader.py</a></code> script)</em>
 </p>
 
+<p align="center" width="100%">
+    <img align="center" width="100%" src=https://github.com/CEA-MetroCarac/PySSPFM/blob/main/doc/_static/histo_list_off_field.PNG> <br>
+    <em>Result of list_map_reader (figure generated with <code>main_list_map_reader</code> function of <code><a href="https://github.com/CEA-MetroCarac/PySSPFM/blob/main/PySSPFM/toolbox/list_map_reader.py">toolbox/list_map_reader.py</a></code> script)</em>
+</p>
+
 <p align="justify" width="100%">
 The files containing the phase offsets and inversions, <code>phase_offset.txt</code> and <code>phase_inversion.txt</code> generated by 
 <code><a href="https://github.com/CEA-MetroCarac/PySSPFM/blob/main/PySSPFM/toolbox/phase_offset_analyzer.py">toolbox/phase_offset_analyzer.py</a></code> and <code><a href="https://github.com/CEA-MetroCarac/PySSPFM/blob/main/PySSPFM/toolbox/phase_inversion_analyzer.py">toolbox/phase_inversion_analyzer.py</a></code> scripts can be analyzed by the script.
diff --git a/parameters_first_step_4.PNG b/parameters_first_step_4.PNG
new file mode 100644
index 00000000..a8ebdce2
Binary files /dev/null and b/parameters_first_step_4.PNG differ