The sensors values vs position should read as follow.
Horizontal(0°= 0 Quid) ACC_X: 0 ACC_Z: XX GYR_X: 0
Left side (-90°= -256 Quid) ACC_X: XX ACC_Z: 0 GYR_X: 0
Right side (+90° = +256 Quid) ACC_X: -XX ACC_Z: 0 GYR_X: 0
Reversed (180° = +512 Quid) ACC_X: 0 ACC_Z: -XX GYR_X: 0
Les unites de mesure d'angles