In an undazzled area map product stored in a computer readable storage unit, {HEAD ~ information} indicative of {TAIL ~ a relationship} between a boundary distance and each of a plurality of divided sections of a rectangular area to be picked up by a pickup unit is included 
indicative of
In an undazzled area map product stored in a computer readable storage unit , { HEAD ~ information } indicative of { TAIL ~ a relationship } between a boundary distance and each of a plurality of divided sections of a rectangular area to be picked up by a pickup unit is included
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH