value unc_up unc_lo author ref method 7.04 0.090 0.090 Masiero 2014ApJ...791..121M NEATM 7.51 0.088 0.088 Masiero 2011ApJ...741...68M NEATM 7.86 0.120 0.120 Masiero 2014ApJ...791..121M NEATM 8.36 0.149 0.149 Masiero 2011ApJ...741...68M NEATM