Table 1.

List of parameters (parameters) and a summary of the corresponding values reported by Taylor et al. (2017) (reference), the core-shell model (model) of equations (4)-(7).

Parameters	Reference	Model
${\tau }_{\upsilon }$	$25.1$ h	$25.1$ h
${\tau }_d$	$23.9$ h	$23.3$ h
${\sigma }_{\upsilon }$	$1.3$ h	$1.3$ h
${\sigma }_d$	$1.9$ h	$1.9$ h
$K_{\upsilon \upsilon }$	—	5.6
$K_{dd}$	—	4.0
$K_{\upsilon d}$	—	1.1
$K_{d\upsilon }$	—	0.5
$F$	—	1.5
${\overline{\omega }}_{\upsilon }$	—	19.3
${\overline{\omega }}_d$	—	20.8
${∆}_{\upsilon }$	—	1.0
${∆}_d$	—	1.7

Time-dimensional parameters include ${\sigma }_{\upsilon (d)}$ , the standard deviation of free-running periods reported by Taylor et al. (2017); ${\tau }_{\upsilon (d)}$ , the mean free-running period of the core (shell). Dimensionless parameters are obtained by multiplying time-dimensional parameters and dividing frequency-dimensional parameters by the frequency unit ${\Delta }_{\upsilon }=\pi {\sigma }_{\upsilon }/{\tau }_{\upsilon }^2$ . Frequency-dimensionless parameters include $K_{\upsilon \upsilon (dd)}$ , the intracoupling in the core (shell); $K_{\upsilon d}$ and $K_{d\upsilon }$ , the core-shell intercouplings; $F$ , the strength of the light cue acting exclusively on the core. The dimensionless equivalents of the model parameters: ${\overline{\omega }}_{\upsilon (d)}=2\pi /{\tau }_{\upsilon (d)}$ , the mean free-running frequency of core (shell) oscillators; and ${∆}_{\upsilon (d)}$ , the Lorentzian spread (half width at half maximum) of free-running frequencies in the core (shell).