Fig. 3

Bland-Altman plots of individual data for T_es and T_{ty_c} at room temperature (a, without insulation of the ear; b, with insulation) and low temperature (c, without insulation of the ear; d, with insulation). The solid line is the mean of differences and the dashed lines are the limits of agreement (mean ± 1.96 standard deviation). T_{ty_c} are corrected values of T_ty at 3 min derived from a linear regression model to predict T_es