Navigation solution for the low latitude receiver FAA1 during 6 days on the spring equinox (DoYs 76–79, 2014). Top panel: maximum values of S4 and σ_IF. Bottom panel: the number of satellites used to compute the navigation solution (divided by 10) is depicted in black. The σ_ϕ values are depicted in red and the 3D position error is depicted in green. Notice that the solution is reset at 0h on each day.