 ![ [*Left panel:*]{} Time-average energy flux (00-000 keV) vs. $T_{00}$. [*Right panel:*]{} Time-average photon flux (00-000 keV) vs. $T_{00}$. For both plots, the fluxes are estimated by the best-fit model (either simple PL or CPL). The bursts that are better fitted by the CPL model are marked in red. Note that GRBs with unconstrained durations, such as the ultra-long GRBs, are not included in this plot. []{data-label="fig:energy_photon_flux_T00"}](energy_flux_vs_T00_best_model.pdf "fig:"){width="00.00000%"} ![ [*Left panel:*]{} Time-average energy flux (00-000 keV) vs. $T_{00}$. [*Right panel:*]{} Time-average photon flux (00-000 keV) vs. $T_{00}$. For both plots, the fluxes are estimated by the best-fit model (either simple PL or CPL). The bursts that are better fitted by the CPL model are marked in red. Note that GRBs with unconstrained durations, such as the ultra-long GRBs, are not included in this plot. []{data-label="fig:energy_photon_flux_T00"}](photon_flux_vs_T00_best_model.pdf "fig:"){width="00.00000%"}  