condition	mean	min	max
4 h after light	15784.5	15784.5	15784.5
8 h after light	15303.7	14489.7	16117.7
12 h after light	13704.5	13018.3	14390.7
4 h after dark	10583.4	9309.4	11857.4
8 h after dark	6848.45	6770.0	6926.9
12 h after dark	8827.75	7120.8	10534.7