  In the present work, we provide further evidence for the applicability of a
modified stretched-exponential behavior, proposed recently for the description
of aging-time dependent data below the glass temperature [P. Lunkenheimer et
al., Phys. Rev. Lett. 95 (2005) 055702]. We analyze time-dependent dielectric
loss data in a variety of aging glasses, including new data on Salol and
propylene carbonate, using a conventional stretched exponential and the newly
proposed approach. Also the scaling of aging data obtained at different
measuring frequencies, which was predicted on the basis of the new approach, is
checked for its validity.
