condition	mean	min	max
4 h after light	1639.0	1639.0	1639.0
8 h after light	1623.75	1514.8	1732.7
12 h after light	1721.85	1687.1	1756.6
4 h after dark	1502.75	1269.0	1736.5
8 h after dark	1178.05	1159.3	1196.8
12 h after dark	1158.8	1116.0	1201.6