condition	mean	min	max
4 h after light	7.303145	6.44406	8.16223
8 h after light	6.0257950000000005	5.80769	6.2439
12 h after light	6.2394300000000005	5.93293	6.54593
4 h after dark	8.560143333333333	8.31451	8.75925
8 h after dark	8.58322	8.11048	8.90771
12 h after dark	7.261636666666667	6.73602	7.70742