condition	mean	min	max
4 h after light	6.07741	5.8958900000000005	6.22861
8 h after light	5.856486666666667	5.59828	5.98599
12 h after light	6.03987	5.93604	6.16172
4 h after dark	5.97916	5.91999	6.0948
8 h after dark	6.131536666666667	5.9280800000000005	6.400980000000001
12 h after dark	6.408806666666667	6.28247	6.5271099999999995