Table 3. Partial pressure of oxygen (PaO₂) before (Pre-O₂) and during oxygen supplementation in individual bears anesthetized winter and summer captures.

	Winter PaO2 (mmHg)				Summer PaO2 (mmHg)
	Kg	Pre-O2	O2 suppl. (L/min)	During O2	Kg	Pre-O2	O2 suppl. (L/min)	During O2
Male (3)§					62.5	69	1	89
Male (2)	54	62	2	301	56
Female (3)	54.8	106	1	100	55	99	1	124
Female (3)*	50.8	67			53	96	1	180
Male (3)#	65.8	57	0	43*	77	66	1	138
Female (3)	57	59	1	185	72	76	1	104
Male (3)	58	70	1	208	51	77	0.5	92
Female (2)	21.3	82	1	387	22	93	0.5	134
Male (4)	59.4	76	1	141	47	120	1	126
Male (2)	25				27	82	0.5	116
Female (2)#	35	30	1	307	28		0.5	129

^*denotes the results of the only bear not given oxygen that was sampled during the second sampling interval.