condition	mean	min	max
4 h after light	6.97075	6.8878	7.077660000000001
8 h after light	6.93719	6.890460000000001	7.00438
12 h after light	7.2208966666666665	7.0247399999999995	7.413460000000001
4 h after dark	7.216123333333334	7.0924	7.30616
8 h after dark	7.07564	7.0392399999999995	7.13541
12 h after dark	7.046056666666667	6.964010000000001	7.12493