condition	mean	min	max
4 h after light	17.81275	15.3307	20.2948
8 h after light	19.90305	19.3019	20.5042
12 h after light	19.551099999999998	17.09	22.0122
4 h after dark	19.762066666666666	18.8075	21.5355
8 h after dark	23.491233333333334	21.451	26.1373
12 h after dark	21.1378	18.5111	22.7695