condition	mean	min	max
4 h after light	9.057153	8.322675	9.791631
8 h after light	8.0419955	7.908644	8.175347
12 h after light	7.935698499999999	7.824082	8.047315
4 h after dark	8.777189	8.730824	8.823554
8 h after dark	8.049581	7.833225	8.265937
12 h after dark	8.985466	8.985466	8.985466