condition	mean	min	max
4 h after light	17.7606	15.3245	20.1967
8 h after light	17.25005	16.3643	18.1358
12 h after light	20.273049999999998	19.304	21.2421
4 h after dark	23.912466666666667	22.9523	25.0682
8 h after dark	28.011933333333335	27.282	29.3276
12 h after dark	19.6123	18.7653	20.895