condition	mean	min	max
4 h after light	15.82355	15.0595	16.5876
8 h after light	10.337565000000001	9.84693	10.8282
12 h after light	11.16749	9.86798	12.467
4 h after dark	19.196033333333332	18.0677	19.9285
8 h after dark	20.893333333333334	20.4059	21.5884
12 h after dark	21.407066666666665	18.7153	23.2714