2-methyltetrahydrofuran, MTHF, +99.1%, distilled),

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:
MTHF.png - the plot of data
MTHF_Freq.dat - the frequencies
MTHF_Imag.dat - the imaginary parts
MTHF_Real.dat - the real parts 
MTHF_Temp.dat - the temperatures