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