Physical crystal structures of a compound of the formula I:are provided including the free base monohydrate thereof and the hydrochloric acid salt thereof, including hydrochloric acid salt containing 0. The optical fibers can be assembled in a parallel manner into a fiber sensor configuration. One arrangement involves providing the label or tag with a tear strip by which the RFID transponder in the label or tag is destroyed, and in another arrangement a tag can be torn along a weakening line to destroy the RFID transponder. A measuring portion of the unit measures the internal diameter of the bore. The amount of ozone released into the environment is reduced.