value	unc_up	unc_lo	author	ref	method
0.235	0.1081	0.1081	Ryan&Woodward	2010AJ....140..933R	IRAS-NEATM
0.325	0.0347	0.0347	Ryan&Woodward	2010AJ....140..933R	IRAS-STM
0.326	0.0710	0.0710	Tedesco	2002AJ....123.1056T	STM