Does the discoloration of the top fibers of the Shroud of Turin cover the fiber 360 degrees around the exterior on both the front and back image?

I did some reading but cannot say for certain I understand. Imagine the fiber is a cylindrical object. Does the stain cover the upper most fiber for 360 degrees around the fiber extrior? And does the back of the Shroud contain the same discoloration 360 degrees around the upper most fiber?