condition	mean	min	max
4 h after light	8.49567	8.37423	8.61711
8 h after light	7.215590000000001	5.38479	9.04639
12 h after light	13.11185	13.0269	13.1968
4 h after dark	21.75685	20.6551	22.8586
8 h after dark	18.3371	17.8545	18.8197
12 h after dark	15.1482	14.0283	16.2681