Given in Table SQ$4\mathrm{.}1$ are the response data from a reactor $(=30$min to which a step input of tracer was applied. If you desired to model this reactor as a series of CSTRs$,$ how many CSTRs would you use? If you desired to model the reactor with an axial dispersion model, what dispersion number would you use?

TABLE SQ$4.1$

Step Input Tracer Response of a Reactor

$\backslash$table$[[tmin,\frac{S_T}{S_{TO}},$tmin,$\frac{S_T}{S_{TO}}$