condition	mean	min	max
4 h after light	6.49308	6.203	6.78316
8 h after light	6.32325	6.15939	6.48711
12 h after light	6.31794	6.20829	6.42759
4 h after dark	10.480325	9.93585	11.0248
8 h after dark	11.3462	10.9375	11.7549
12 h after dark	9.40056	9.39436	9.40676