An irrigation diverter for diverting a flow of liquid from a larger flow includes a housing, a filter to trap unwanted debris, a cleaner to remove the trapped debris from the filter, and a turbine to power the cleaner. The spin valve sensor has a transverse length between the first and second side surfaces which is divided into a track width region between first and second passive regions wherein the track width region is defined by a space between the first and second lead layers. The combination of these elements allows an elderly, disabled, or otherwise weakened person to easily rise from a seated to standing position. It is formed with two areal electrically conductive part elements. A quality value is calculated for a service to be transmitted on the traffic channel during a certain period by subtracting the number of frames transmitted during said period from the number of frames received during said period and by dividing the difference obtained by the number of frames transmitted during said period .