condition	mean	min	max
4 h after light	17.6468	15.2644	20.0292
8 h after light	16.0962	15.3492	16.8432
12 h after light	18.0866	16.9803	19.1929
4 h after dark	26.255733333333332	22.5723	29.7138
8 h after dark	27.468766666666667	25.5367	30.9179
12 h after dark	19.9625	16.8986	23.6667