BC_3000 Å vs L_bol for HYPERION and E-XQR-30 QSOs with their weighted mean value reported as a dark-blue square. The left panel illustrates L_bol computation using Eq. (3), while the right panel showcases results obtained through the lum-K13 modeling of the EUV. The constant 3000 Å BCs proposed by Richards et al. (2006) are overplotted. The original value of 5.15 is depicted as a black dot-dashed line while, the version recomputed by Runnoe et al. (2012) to exclude IR emission is represented as a red solid line.