A data processor is used for registering {TAIL ~ the time} of {HEAD ~ the day} when the passage is detected, the time of the day when a change of state occurs at each station 
A data processor is used for registering { TAIL ~ the time } of { HEAD ~ the day } when the passage is detected , the time of the day when a change of state occurs at each station
OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH