condition	mean	min	max
4 h after light	73.8	73.8	73.8
8 h after light	40.1	12.5	67.7
12 h after light	38.6	24.7	52.5
4 h after dark	74.2	30.8	117.6
8 h after dark	72.1	65.2	79.0
12 h after dark	40.0	20.2	59.8