Irregularity data for MK5 track spec Issue 5 (VDYN 246)

Track irregularity data which conforms to the MK5 Track Spec Issue 4 was reported in VDYNs 217 & 230. This work showed up some weaknesses in the Issue 4 spec, particularly concerning the level of all peak values, the method of dealing with cross-level peaks, and the treatment of long...