condition	mean	min	max
4 h after light	2.1197150000000002	2.05419	2.18524
8 h after light	6.289045	5.96372	6.61437
12 h after light	19.2372	18.0951	20.3793
4 h after dark	14.91695	13.421	16.4129
8 h after dark	4.886335000000001	4.43648	5.33619
12 h after dark	2.96227	2.45377	3.47077