value	unc_up	unc_lo	author	ref	method
13.21	0.116	0.116	Masiero	2011ApJ...741...68M	NEATM
13.46	0.180	0.180	Masiero	2012ApJ...759L...8M	NEATM
19.77	1.900	1.900	Tedesco	2002AJ....123.1056T	STM