condition	mean	min	max
4 h after light	7.126086666666667	7.053789999999999	7.21886
8 h after light	7.14312	6.93693	7.34068
12 h after light	7.0985000000000005	6.837680000000001	7.434360000000001
4 h after dark	7.1714400000000005	6.86074	7.46202
8 h after dark	7.22196	6.988980000000001	7.48424
12 h after dark	6.93947	6.75638	7.11395