\begin{table}%t3 \caption {\label{linesfit}Parameters of the best-fit solutions to the light curves of Cyg~OB2\#5 as observed through the line-bearing filters.} %\centerline {\begin{tabular}{l c c c} \hline\hline Filter$^a$ & He~{\sc ii} & C~{\sc iv} & He~{\sc i} \\ \hline $T_{\rm eff, s}$~(K) & 28~400 & 32~600 & 21~300 \\ \hline Bright spot & \\ Longitude $(^{\circ})$ & $-15$ & $-28$ & $-26$ \\ Radius $(^{\circ})$ & $125$ & $117$ & $118$ \\ Temperature ratio & $1.14$ & $1.26$ & $1.46$ \\ \hline \end{tabular}} \par \smallskip $^a$ {Several parameters were frozen in these fits: $i = 64.2^{\circ}$, $q = 3.31$, primary and secondary filling factors~=~1.00, $T_{\rm eff, p} = 36~000$~K, latitude of the bright $\rm spot = 0^{\circ}$.} \end{table}