condition	mean	min	max
4 h after light	8.923606	8.31894	9.528272
8 h after light	8.300235	7.821657	8.778813
12 h after light	7.8940085	7.830436	7.957581
4 h after dark	8.4368105	7.911809	8.961812
8 h after dark	8.2315	8.075674	8.387326
12 h after dark	7.820455	7.820455	7.820455