condition	mean	min	max
0 h after light	8.10631	7.95402	8.2586
4 h after light	5.666295	5.45692	5.87567
8 h after light	6.48015	6.19445	6.76585
4 h after dark	7.87106	7.51335	8.22877
8 h after dark	6.34851	6.22156	6.47546
12 h after dark	8.43226	7.46617	9.39835