Purpose: Time step size after the exposure.
Data Type: real number
Unit: h
Default: 1 h (25 h if SIMCON: keyword is missing from input file)
Comments: Use small values to output additional information on cell and damage rejoining kinetics or to gain more precise control over when the simulation terminates.  On the other hand, use larger time steps to decrease the CPU time needed to execute simulations with large values of TMAX, TCUT, or NSTP (i.e., long radiobiological simulations).