Observed flux ratio, f_ν(900)/f_ν(1400), as a function of physical parameters. From the top left to the bottom right the physical parameters are rest-frame absolute magnitude (M1400), log(M^∗/M_⊙), SFR, and dust reddening. The dashed lines indicate the observed flux ratio equal to zero and are drawn to aid the eye. The symbol coding is the same as in Fig. 8. The vertical dashed and solid green lines indicate the approximate values of stellar mass and SFR of two high-z LyC-emitter candidates in the literature, Ion1 and J0921 + 4509, respectively.