Table 3.

Parameter estimates, odds ratios, marginal (R²m) and conditional R² (R²c) values of generalized mixed models for the proportion of individuals at T_peak and T_Arr across temperatures for different incubation temperatures as depicted in Fig. 3. Odds ratios were calculated as the exponential of parameter estimates. R² values were calculated using the delta method. See Supplementary Table 2 for parameter estimates of random effects. Bolded P values indicates statistical significance (P < 0.05).

Metric	Parameter	Estimate±SE	z-value	P value	Odds Ratio	R2m	R2c
Temperature where heart rate reaches a maximum (Tpeak)	Intercept	−10.17 ± 2.32	−4.39	<0.001
	Temperature	0.92 ± 0.12	7.40	<0.001	2.52	0.836	0.843
	Incubation	−0.50 ± 0.19	−2.59	0.010	0.61
	Temperature x Incubation	−0.003 ± 0.01	−0.35	0.725	1.00
Temperature where arrhythmia first occurs (TArr)	Intercept	−10.31 ± 2.50	−4.12	<0.001
	Temperature	0.75 ± 0.12	6.40	<0.001	2.12	0.783	0.793
	Incubation	−0.52 ± 0.21	−2.47	0.014	0.59
	Temperature x Incubation	0.002 ± 0.01	0.23	0.821	1.00