condition	mean	min	max
4 h after light	17.3711	16.9909	17.7513
8 h after light	22.18065	21.0504	23.3109
12 h after light	21.67445	21.0562	22.2927
4 h after dark	27.6089	26.8349	28.3829
8 h after dark	22.6751	22.038	23.3122
12 h after dark	19.40745	18.3928	20.4221