Processing a file computes average (Va), interval (Vi), and root mean square (Vrms) velocity for each time-depth pair. These data are presented in the first page of the output T-D Chart. If "Slice" mode is selected, all time-depth pairs are interpolated at 100 millisecond time slices. Va, Vi, and Vrms are then computed based on the time sliced values. If "Original" mode is selected, then Va, Vi, and Vrms are computed based on the time-depth pairs as originally sampled.
In both "Batch" and single file "Interactive" mode, the user can resample the survey data by slicing it every 100 milliseconds. Remember the User Setup dialog defines the type of interpolation used for slicing. See Interpolation Method for Slice.