Dibutyl phthalate, 98% Aldrich

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:
DBP.png - the plot of data
DBP_Freq.dat - the frequencies
DBP_Imag.dat - the imaginary parts
DBP_Real.dat - the real parts 
DBP_Temp.dat - the temperatures