Residuals for the mid-transit timings of TOI-1422 b versus a linear ephemeris, with 1-σ error bars, are plotted in black. The green circles, red diamonds, and blue stars represent TTV predictions in the cases of null, average, or maximum eccentricities, respectively, with the error bars showing the uncertainty due to T_0,c (see Table 2). The points have been slightly shifted on the x-axis to allow for more visibility.