Update 4 5 isosurface

4-5-isosurface.md

 # Viewing 3D iso-level surface for jet stream
 
-> NOTE: Most parts of this guide can also be applied to the visualization of any 3D iso-level surface of any variable.
+> NOTE: This guide can also be applied to the visualization of any 3D iso-level surface of any variable.
 
 ![](img/4-5-isosurface.png)