condition	mean	min	max
4 h after light	7.270732333333333	6.211208	8.779689
8 h after light	12.21734	10.59742	15.2239
12 h after light	20.598836666666667	19.498839999999998	22.18441
16 h after light	11.366810000000001	10.27587	12.094610000000001
4 h after dark	18.11301333333333	16.387729999999998	19.22065
8 h after dark	16.317330000000002	15.46386	17.31436