condition	mean	min	max
4 h after light	13.261986666666667	11.17504	15.50886
8 h after light	6.4662239999999995	3.122521	11.10455
12 h after light	14.873730000000002	13.369470000000002	17.83001
16 h after light	13.607882333333334	8.862107	16.675910000000002
4 h after dark	19.23476	16.44515	21.873379999999997
8 h after dark	15.11882	9.836139999999999	19.316979999999997