To certainty as to whether four or three  (or five) peaks occur along the dodecamer arms on either side of the N terminal. I wonder if this is just the bouncing of the tip…..  but against that argument is the fact that a large peak next to the N terminal is most dependable…..  next most dependably seen is peak II also in the collagen-like region.  the size on either side of the N terminal is also mostly symmetrical.  I think there are at least 3 maybe 4… you decide.  If you need to see the individual LUT plots… they are given below… nb… per SP-D dodecamer image there are two plots CRD to CRD which means there are twice as many (mirror images) of the peaks and CRD than there are measures of the Nterm.