condition	mean	min	max
4 h after light	7.149263333333333	6.98195	7.306439999999999
8 h after light	7.228773333333333	7.12688	7.38437
12 h after light	7.12216	7.0862	7.16269
4 h after dark	7.133186666666667	6.939360000000001	7.4245399999999995
8 h after dark	6.9663900000000005	6.860710000000001	7.09593
12 h after dark	6.9534199999999995	6.72412	7.314769999999999