Dynamical map for the solution presented in Table 4 for a wide range of orbital periods and eccentricities of the outer non-transiting planet c. The narrow right panel presents a close-up of the scan for the 3 σ region around the orbital period of the planet c in the circular model (black filled circle with a white rim) and for the 3 σ region around the orbital period and eccentricity of planet c in a model with eccentricities as free parameters (filled black square with white rim). Small values of the fast indicator $\log \widehat{\text{REM}}$ characterizes regular (longterm stable) solutions, which are marked with black/dark blue color. Chaotic solutions are marked with brighter colors, up to yellow. The black line represents the so-called collision curve of orbits, defined by the condition: a_b(1+e_b)=a_c(1−e_c). The resolution for the left plot is 401 × 201 points, while that for the right plot is 201 × 201 points. “The initial conditions were calculated for each point of the scan while keeping the time of the first transit fixed.”