2-phenyl-5-acetomethyl-5-ethyl-1,3-dioxocyclohexane (synthesized at Díaz-Calleja’s
laboratory at Universidad Politécnica de Valencia),

Albena I. Nielsen, Tage Christensen, Bo Jakobsen, Kristine Niss, Niels Boye Olsen,
Ranko Richert, and Jeppe C. Dyre,THE JOURNAL OF CHEMICAL PHYSICS 130, 154508 (2009)

The data  set is organized as 5 files:
APAED.png - the plot of data
APAED_Freq.dat - the frequencies
APAED_Imag.dat - the imaginary parts
APAED_Real.dat - the real parts 
APAED_Temp.dat - the temperatures