over the targeted redshift range $3 .0 \leq z < 4.0$.

The resulting mass-selected sample of galaxies at $3 .0 \leq z < 4.0$ contains 14 sources with $M_{\rm star} \geq 10^{11.40}$ M$_{\sun}$ (10 from the COSMOS field and 4 from the AEGIS field) over an effective area of 0.44 square degrees. The sample is listed in Table \[tab-1\], along with the observed $r$-, $H$-, and $K$-band total magnitudes, adopted EAZY best-fit redshifts and 1 $\sigma$ errors, and FAST best-fit $M_{\rm star}$, SFR, $A_{\rm V}$, and age with corresponding 1 $\sigma$ errors.

As shown in Table \[tab-1\], the typical random error on the estimated stellar masses of the mass-selected sample is $\sim0.1$ dex for the default set of SED-modeling assumptions (which uses the @bruzual03 models), and $\sim0.16$ dex for the other set (which adopts the @maraston05 models). These errors are in good agreement with the errors on stellar mass due to photometric redshift uncertainties estimated by @taylor09, with a typical error on the stellar mass of $\sim0.1$ dex for photometric redshift errors of $\sigma_{\rm z}/(1+z)=0.035$ at $z<1.5$. As shown by @taylor09, in a photometric redshift survey, the stellar mass estimates are relatively robust to random photometric redshift errors, due to 