Addendum to "Determination of $\gamma$-ray widths in $^{15}$N using nuclear resonance fluorescence''

The determination of absolute widths of two observed levels above the proton threshold in $^{15}$N has been improved by a combined analysis of our recent $^{15}$N($\gamma$,$\gamma'$)$^{15}$N$^\ast$ photon scattering data, resonance strengths $\omega\gamma$ of the $^{14}$C($p$,$\gamma$)$^{15}$N reaction, and $\gamma$-ray branchings $b_{\gamma,i}$ in $^{15}$N. The revised data are compared to the adopted values, and some inconsistencies in the adopted values are illustrated.