condition	mean	min	max
0 h after light	8.38274	8.31446	8.45102
4 h after light	8.11275	7.74439	8.48111
8 h after light	8.45581	7.97628	8.93534
4 h after dark	12.65105	11.9339	13.3682
8 h after dark	11.1599	10.0411	12.2787
12 h after dark	8.270935	8.17986	8.36201