condition	mean	min	max
4 h after light	7.17113	7.06412	7.27517
8 h after light	8.149946666666668	7.91513	8.283560000000001
12 h after light	7.078496666666666	6.8806199999999995	7.341880000000001
4 h after dark	6.742466666666667	6.46746	6.8868100000000005
8 h after dark	6.8963	6.8670800000000005	6.9185
12 h after dark	6.929903333333334	6.8063199999999995	7.0187800000000005