i thought that looks right , stoichiometic value is 14.7 for the mass of air to 1 part fuel , so at idle your about spot on, 0.5 to 0.7 maybe a little lean then 1 bar and 2 bar looks spot on as anything lower than 14.7 to 1 is classed as a rich mixture and anything over is a lean mixture so thats the mapper adding the extra fuel for the boost . iam sure this is right but anyone can correct me if iam wrong
i know my engine was on the dyno but every step of boost on the map the afr was 12.3/12.4 even upto 30 psi

hope this helps

cheers paul