condition	mean	min	max
4 h after light	9.781780000000001	7.80076	11.7628
8 h after light	8.917449999999999	8.7462	9.0887
12 h after light	19.46155	19.3891	19.534
4 h after dark	23.218266666666665	22.5464	23.5576
8 h after dark	26.2432	25.864	26.9395
12 h after dark	15.903133333333333	15.4507	16.5971