Citizens of Parktown are worried by the increased frequency of serious crimes committed by local teenagers  In response, the city government has instituted a series of measures designed to keep teenagers at home in the late evening  Even if the measures succeed in keeping teenagers at home, however, they are unlikely to affect the problem that concerns citizens, since most crimes committed by local teenagers take place between 3 p  m  and 6 p
m
Any decrease in the need for police patrols in the late evening would not mean that there could be more intensive patrolling in the afternoon.