condition	mean	min	max
4 h after light	7.285886666666667	7.12667	7.371180000000001
8 h after light	7.3643366666666665	7.02083	7.674869999999999
12 h after light	7.303616666666667	7.10222	7.46245
4 h after dark	7.3575800000000005	7.10226	7.49523
8 h after dark	7.42663	7.3122	7.504980000000001
12 h after dark	7.533989999999999	7.49585	7.58555