condition	mean	min	max
4 h after light	5.924275	5.09487	6.75368
8 h after light	6.13508	6.12372	6.14644
12 h after light	7.807305	7.65014	7.96447
4 h after dark	13.8021	13.6426	13.9616
8 h after dark	13.47335	13.4337	13.513
12 h after dark	11.31615	10.8684	11.7639