Distribution of f_{Lyα, full FOV}/Σf_{Lyα, tile fit} for our HzRGs. The f_{Lyα, full FOV} is the intrinsic Lyα flux resulted from fitting the spectrum summed over the entire FOV. The Σf_{Lyα, tile fit} is the summation of the intrinsic Lyα flux in each tessellation bin (Fig. 1b). The smaller the value, the more likely the Lyα photon is being double-counted when correcting for absorption. 4C+04.11 is the one with the smallest ratio which may also indicate over-correction (Appendix B).