condition	mean	min	max
0 h after light	20.76795	20.6669	20.869
4 h after light	12.92465	12.4987	13.3506
8 h after light	9.83184	9.77172	9.89196
4 h after dark	14.0724	12.7513	15.3935
8 h after dark	16.50695	15.7681	17.2458
12 h after dark	17.2412	16.1073	18.3751