condition	mean	min	max
4 h after light	15.3431	14.4156	16.2706
8 h after light	11.5292	11.4976	11.5608
12 h after light	20.99855	20.2122	21.7849
4 h after dark	18.3624	17.643	19.0818
8 h after dark	23.90095	22.9824	24.8195
12 h after dark	22.4554	21.943	22.9678