Table 1.

Weighted pre- and postflight OCR data

	OCR, °	SD	SE	Gain	n
BDC	6.99	1.99	0.66	0.155 ± 0.015	25
R+2/3	5.33	2.34	0.78	0.118 ± 0.017	12
R+4/5	5.99	1.71	0.57	0.133 ± 0.013	21
R+9/10	7.17	2.19	0.73	0.159 ± 0.016	22

Values are the OCR values for the preflight experiment and the 3 postflight experiments, including SD and ± SE. The OCR was on average 6.99° (SE = 0.66°) before flight. At R+2/3, the OCR was significantly lower compared with preflight measurements. At the R+4/5 experiments, if available, the OCR was 5.99° (SE = 0.57°). Nine days after return, on the day of the late postflight experiment, the difference from the preflight value was no longer significant, indicating a recovery of the otolith system.