Using headway-based or timetable-based assignment you cannot only calculate skims for the assignment period, but also calculate skims for analysis time intervals. The program then accounts for analysis time intervals that overlap with the assignment period.
Decisive for the assignment to a time interval is the demand it contains. This means that for skims of the analysis time interval, connections outside the time interval are also taken into account if they are used by the demand of this time interval. This for instance ensures a precise calculation of the skims adaptation time or extended adaptation time.
In addition to the restrictions for skim calculation listed in Table 170, the skims discomfort and service frequency are also not calculated.
