condition	mean	min	max
4 h after light	20802.8	20802.8	20802.8
8 h after light	20602.05	20405.5	20798.6
12 h after light	18790.35	18455.3	19125.4
4 h after dark	16551.0	15904.9	17197.1
8 h after dark	14817.8	13059.1	16576.5
12 h after dark	14722.15	13802.0	15642.3