Point location

In the course A photo of The Lung Meridian of Hand-Taiyin it seems that the points   L3,Tianfu and  L4, Xiabai  are pictured more towards the medial/ulnar aspect of the biceps brachii. In a few other texts I have seen they discuss these points as being to the the radial side of the muscle.  Could anyone please discuss if there are differences of opinion as to the  location of these points? I know it makes sense that they are where they are in the photo though  Thank you for your time.

Sorry for the previous post. I answered my own question by looking at the point location in the material of course C. Its location does correspond to the  the other texts I refered to. Perhaps I was looking at the photo incorrectly...