value unc_up unc_lo author ref method 10.49 3.250 3.250 Masiero 2012ApJ...759L...8M NEATM 7.63 0.088 0.088 Masiero 2011ApJ...741...68M NEATM 9.51 4.070 4.070 Masiero 2021PSJ.....2..162M NEATM