condition	mean	min	max
4 h after light	7.53565	7.5117	7.56285
8 h after light	7.462516666666667	7.3529	7.62108
12 h after light	7.55748	7.41078	7.69729
4 h after dark	7.55607	7.336880000000001	7.67897
8 h after dark	7.536656666666667	7.383030000000001	7.70442
12 h after dark	7.644276666666666	7.524489999999999	7.844460000000001