value unc_up unc_lo author ref method 6.16 0.352 0.352 Masiero 2011ApJ...741...68M NEATM 6.52 2.010 2.010 Masiero 2020PSJ.....1....5M NEATM 7.07 2.370 2.370 Masiero 2021PSJ.....2..162M NEATM