condition	mean	min	max
4 h after light	20.86805	17.3062	24.4299
8 h after light	18.18175	18.1741	18.1894
12 h after light	16.38815	15.0072	17.7691
4 h after dark	15.3217	15.1156	15.6965
8 h after dark	16.13746666666667	14.8148	16.9526
12 h after dark	22.374266666666667	20.2719	24.2375