Dataset and model,        pitch,  yaw,  roll,  mean,  median
biwi error:  7.955,   5.583, 4.403,  5.980,  2.624
bu error:    2.734,   3.350, 2.459,  2.848,  1.974
ict error:   3.610,   3.959, 3.369,  3.646,  1.967