Growth tracks of six planetary embryos, which start at either 1 or 5 AU, where three different growth scenarios are invoked:the normal one (Eq. (1)) and a growth that is 4 times faster and 4 times slower. The planets start at t = 0 Myr. The dots mark the pebble isolation mass, when planets stop growing. The planet growing at 1 AU with slow growth never reaches pebble isolation mass until the end of the discs lifetime. The solid contours mark the regions of outward migration at disc ages of 3 and 5 Myr, where planets inside of these contours can migrate outwards. All growth tracks are for scenarios where planets are allowed to migrate outwards. The small tics on the top mark the position of the water ice line at 3 and 5 Myr. The green growth track (1 AU, normal growth) features an interesting trajectory: the planet first migrates all the way out to 3 AU at 3 Myr, but then follows the zero torque region (Γ₀) and migrates inwards with it. The planet is thus rocky in composition (pebble isolation reached interior of 1 AU), but its final position is exterior to the water ice line ().