Table 1.

Mean values and range between animals for rumen contraction variables.

Item, units	Meana	s.e.m.b	Rangec
Baseline, mmHg	22.98	2.68	7.28
Peak, mmHg	30.28	2.78	7.29
Amplitude, mmHg	7.29	0.46	1.07
Frequency, contractions/min	2.87	0.23	0.92
Time to peak, s	4.06	0.42	0.85
Relaxation time, s	5.23	0.50	1.04
Duration, s	9.29	0.73	1.34
Area, mmHg*s	30.47	2.99	6.93

^aMean = overall mean, n = 576.

^bs.e.m. = standard error of the mean, n = 8.

^cRange = range of means among the 8 steers.