Table 1.

Total time spent by animals in each state of vigilance.

ANIMAL	W		SWS		REM
	C	E	C	E	C	E
1	234.26	205.07	276.03	320.24	29.71	14.69
2	185.65 .	91.55	319.95	442.19	34.40	6.26
3	285.22	280.19	216.23	253.06	38.55	6.75
4	244.99	191.41	263.72	322.21	31.29	26.38
5	259.45	152.18	243.75	335.14	36.80	52.68
6	243.68	175.19	253.36	316.79	42.95	48.02
MEAN	242.21	182.60*	262.17	331.60*	35.62	25.80
SD	33.92	62.25	34.81	61.40	4.87	20.42

Time in minutes.

^*p<0.05