value unc_up unc_lo author ref method 0.115 0.0125 0.0125 Ryan&Woodward 2010AJ....140..933R IRAS-NEATM 0.139 0.0052 0.0052 Ryan&Woodward 2010AJ....140..933R IRAS-STM 0.173 0.0290 0.0290 Tedesco 2002AJ....123.1056T STM