condition	mean	min	max
4 h after light	2.889965	2.64182	3.13811
8 h after light	2.62804	2.44791	2.80817
12 h after light	2.36156	2.29073	2.43239
4 h after dark	3.14134	2.60978	3.45477
8 h after dark	3.44442	3.05975	3.7864
12 h after dark	2.64278	2.07071	3.07511