condition	mean	min	max
4 h after light	7.260503333333333	6.93451	7.75173
8 h after light	7.129313333333333	6.94597	7.42585
12 h after light	7.2188099999999995	6.87772	7.5293399999999995
4 h after dark	7.17463	6.848	7.414439999999999
8 h after dark	7.346966666666667	7.10818	7.49596
12 h after dark	7.42524	7.30025	7.6478