condition	mean	min	max
4 h after light	20.0	20.0	20.0
8 h after light	17.1	9.9	24.3
12 h after light	10.4	3.3	17.5
4 h after dark	16.35	16.3	16.4
8 h after dark	16.2	2.7	29.7
12 h after dark	21.2	18.7	23.7