condition	mean	min	max
4 h after light	17254.6	17254.6	17254.6
8 h after light	18438.7	14104.4	22773.0
12 h after light	12640.5	8479.9	16801.1
4 h after dark	6983.2	3009.5	10956.9
8 h after dark	5874.15	3597.5	8150.8
12 h after dark	11551.35	8772.5	14330.2