condition	mean	min	max
4 h after light	8.174145	7.02831	9.31998
8 h after light	4.4086099999999995	4.26634	4.55088
12 h after light	8.59239	8.43832	8.74646
4 h after dark	21.36475	17.54	25.1895
8 h after dark	28.06035	28.0537	28.067
12 h after dark	14.386199999999999	13.8392	14.9332