condition	mean	min	max
4 h after light	16.606379	13.888508	19.32425
8 h after light	18.993868	17.691996	20.29574
12 h after light	19.997583499999998	18.893316	21.101851
4 h after dark	20.2597795	18.688532	21.831027
8 h after dark	19.297553999999998	18.893316	19.701792
12 h after dark	18.361347	18.361347	18.361347