On the coordinate z 102, for example, {HEAD ~ the probability} in regard to a call for help of the clients A, B, C can be recorded at {TAIL ~ the time} at the locations 
recorded at
On the coordinate z 102 , for example , { HEAD ~ the probability } in regard to a call for help of the clients A , B , C can be recorded at { TAIL ~ the time } at the locations
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH