condition	mean	min	max
4 h after light	17.605249999999998	16.355035	18.855465
8 h after light	15.039341	12.808156	17.270526
12 h after light	16.156079	15.317879	16.994279
4 h after dark	13.4092415	10.959828	15.858655
8 h after dark	15.3614095	15.317879	15.40494
12 h after dark	19.430214	19.430214	19.430214