condition	mean	min	max
4 h after light	7.6555	7.592039999999999	7.722110000000001
8 h after light	7.82695	7.60722	8.10215
12 h after light	7.756396666666666	7.689539999999999	7.83012
4 h after dark	7.463786666666667	7.19181	7.79168
8 h after dark	7.36275	7.09587	7.706160000000001
12 h after dark	7.06433	6.78055	7.39717