A coiled tubing multi-zone frac system for fracing a formation adjacent a well using a sliding sleeve and erodible jets. The resilient members enable the arms and the moldboard to pivot about the mounting member in the event that an obstruction is encountered by the moldboard. Control circuitry generates a drive signal to control a first current source which is operable to supply a current to the reference voltage generator in response to the drive signal. The reference image is warped according to the disparity set, and subtracted from the main image to determine a set of depth residual values. The outer contacts are arranged outside the package on the flexible interconnection film. In combination these traits set \u2018SUMMER DAZE\u2019 apart from all other existing varieties of Prunella known to the inventor.