condition	mean	min	max
4 h after light	4.227675	2.83544	5.61991
8 h after light	9.097905	9.04861	9.1472
12 h after light	9.797805	7.81391	11.7817
4 h after dark	15.9986	12.4315	19.5657
8 h after dark	7.43069	6.63639	8.22499
12 h after dark	6.54666	5.22274	7.87058