Table 2.

Covariance parameters estimates describing the variability of hourly vaginal temperature of Brangus heifers on pasture during summer in a subtropical environment

Parameter	Estimate	SE	Z value	Pr Z
σ 2 u	0.049	0.003	16.18	<0.0001
ρ	0.791	0.003	275.63	<0.0001
σ 2 e	0.062	0.001	73.44	<0.0001

Estimate, SE and statistical significance for between heifer variance (σ²u), correlation between two adjacent vaginal temperature measures (ρ), and within heifer variance (σ²e).