Problem $5\mathrm{.}3$: Aggregation number of ionic surfactants

The CMC of some sodium alkyl sulfates are given in the table below together with the experimental value of the aggregation number $)$ for one of them.

$\backslash$table$[[$CPP $\frac{?}{3}={?}^{\text{'}},,,],[$Surfactant$,T(C),CMC(mol{L}^{-1}),N_{\text{a}\text{g}\text{g}}$