condition	mean	min	max
0 h after light	20.056449999999998	18.8522	21.2607
4 h after light	13.1881	12.6883	13.6879
8 h after light	9.507395	8.96319	10.0516
4 h after dark	10.947635	8.20437	13.6909
8 h after dark	15.803650000000001	14.4534	17.1539
12 h after dark	15.6111	15.4392	15.783