condition	mean	min	max
4 h after light	9.647426666666666	9.55632	9.72868
8 h after light	9.5482	9.464889999999999	9.6008
12 h after light	9.205546666666667	9.119060000000001	9.32364
4 h after dark	9.015870000000001	8.880180000000001	9.20578
8 h after dark	8.864673333333334	8.75445	8.986410000000001
12 h after dark	8.37501	8.2266	8.51218