condition	mean	min	max
4 h after light	7.4152249999999995	7.2435	7.58695
8 h after light	6.297315	5.67286	6.92177
12 h after light	5.611045	5.48117	5.74092
4 h after dark	8.484185	8.35388	8.61449
8 h after dark	7.19445	7.09386	7.29504
12 h after dark	8.826284999999999	8.56631	9.08626