condition	mean	min	max
4 h after light	59.8836	54.4785	65.2887
8 h after light	19.2486	18.829	19.6682
12 h after light	7.2448250000000005	6.11448	8.37517
4 h after dark	7.04267	6.51841	7.35061
8 h after dark	20.432333333333332	19.2639	22.5292
12 h after dark	51.315533333333335	50.4436	52.6641