condition	mean	min	max
0 h after light	16.22915	15.805	16.6533
4 h after light	6.729205	6.20833	7.25008
8 h after light	3.9584099999999998	3.30177	4.61505
4 h after dark	6.56903	6.18429	6.95377
8 h after dark	9.372075	9.25571	9.48844
12 h after dark	13.73985	11.3186	16.1611