Table 1. Model comparison shows that the three-change-point model describes the data best.

Leave-one-out (LOO) cross-validation for main models (SIR with weekend correction) and a different number of change points. Lower LOO-scores represent a better match between model and data.

Model	LOO-score	Effective number of parameters (pLOO)
zero change points	$927\pm 9$	$8.31$
one change points	$819\pm 16$	$13.46$
two change points	$796\pm 17$	$12.53$
three change points	$787\pm 17$	$13.42$