condition	mean	min	max
4 h after light	7.731935	5.36287	10.101
8 h after light	14.5318	13.3813	15.6823
12 h after light	21.2661	19.408	23.1242
4 h after dark	18.4997	16.3443	20.154
8 h after dark	15.356066666666667	11.992	17.5214
12 h after dark	10.22724	9.04742	11.5378