condition	mean	min	max
4 h after light	17.837688999999997	17.613134	18.062244
8 h after light	16.9592555	15.215413	18.703098
12 h after light	15.8306185	15.241764	16.419473
4 h after dark	15.383522500000002	15.232506	15.534539
8 h after dark	16.006611	15.40494	16.608282
12 h after dark	16.128886	16.128886	16.128886