condition	mean	min	max
0 h after light	15.303149999999999	14.8714	15.7349
4 h after light	7.79226	7.45476	8.12976
8 h after light	7.764635	7.06719	8.46208
4 h after dark	9.949195	9.39519	10.5032
8 h after dark	9.48313	9.13348	9.83278
12 h after dark	11.467555	9.79411	13.141