In the coronal condition, for temperatures associated with SUMER oscillations with periods of 15.7 minutes at 6.3 MK ($\overline{{\tau }_1}\approx 2.36$, $\overline{{\tau }_2}\approx 0.76$) (dashed line) and 13.3 minutes at 8.9 MK ($\overline{{\tau }_1}\approx 4.89$, $\overline{{\tau }_2}\approx 1.43$) (solid line), as calculated using the analytical expression in Eq. (32), the figure depicts the ratio of the damping time to the wave period (τ_d/P) of the affected slow transverse MA modes by the thermal misbalance versus kR.