condition	mean	min	max
4 h after light	6.99625	4.92449	9.06801
8 h after light	7.74989	7.63305	7.86673
12 h after light	7.46705	6.82167	8.11243
4 h after dark	8.881603333333333	8.18509	9.70521
8 h after dark	8.662306666666666	7.7112	9.32109
12 h after dark	7.54298	6.95656	8.22936