condition	mean	min	max
0 h after light	6.273425	4.77448	7.77237
4 h after light	10.449915	9.42563	11.4742
8 h after light	14.6495	13.0616	16.2374
4 h after dark	9.250285	9.08522	9.41535
8 h after dark	9.44416	9.40453	9.48379
12 h after dark	9.57156	8.94012	10.203