condition	mean	min	max
4 h after light	8.625323	8.111734	9.138912
8 h after light	8.7616205	8.733635	8.789606
12 h after light	8.761781500000001	8.590823	8.93274
4 h after dark	8.109801	7.485967	8.733635
8 h after dark	8.8946385	7.671887	10.11739
12 h after dark	8.144933	8.144933	8.144933