condition	mean	min	max
4 h after light	8997.8	8997.8	8997.8
8 h after light	9370.15	8803.5	9936.8
12 h after light	7985.95	6705.9	9266.0
4 h after dark	9179.0	6585.3	11772.7
8 h after dark	9410.55	9202.6	9618.5
12 h after dark	8283.85	7795.5	8772.2