Table 1. Pearson's correlation coefficients among the temperature humidity index and temperatures recorded in the rectum and different portions of the reproductive tract over the estrous cycle in beef cows (n=148 paired measurements).

Parameters	THI	RT	VT	CT	UBT	UHT
THI	1	0.38*	0.43*	0.42*	0.43*	0.42*
RT		1	0.79*	0.76*	0.68*	0.60*
VT			1	0.93*	0.80*	0.70*
CT				1	0.91*	0.82*
UBT					1	0.93*
UHT						1

THI, temperature humidity index; RT, rectal temperature; VT, vaginal temperature; CT, cervical temperature; UBT, uterine body temperature; UHT, uterine horns temperature. * P<0.001.