Table 4.

Magnitude of pitch and roll rotations, in degrees, required to bring each semicircular canal into an earth-horizontal plane.

Canal	Pitch	Direction	Roll	Direction
Left HC	54.7	ND	9.1	RED
Left AC	45.9	NU	46.8	LED
Left PC	25.9	NU	42.4	RED
Right HC	55.3	ND	5.57	LED
Right AC	45.5	NU	46.7	RED
Right PC	25.1	NU	42.6	LED

HC, horizontal canal; AC, anterior canal; PC, posterior canal; ND = pitch nose down, NU = pitch nose up, RED = roll right ear down, LED = roll left ear down