condition	mean	min	max
4 h after light	7.398055	6.0678	8.72831
8 h after light	6.128155	5.93405	6.32226
12 h after light	8.793855	8.50931	9.0784
4 h after dark	11.4422	10.4619	11.9392
8 h after dark	11.743466666666666	10.764	12.8858
12 h after dark	9.507390000000001	9.1213	9.83604