“target or victim backcloth is important for an understanding of the geometric arrangement of crime sites; it is the equivalent of the spatial opportunity structure (brantingham & brantigham, 1993b). it is configured by both geographic and temporal distribution of “suitable” (as seen from the offenders perspective) crime targets or victims across the physical landscape. the availability of particular targets may vary significantly according to neighborhood, area, or even city, and is influenced by time, day of week, and season; hence, the term structural backcloth is also used.”