condition	mean	min	max
4 h after light	8.04147	7.63913	8.44381
8 h after light	8.528955	7.99356	9.06435
12 h after light	14.88265	14.119	15.6463
4 h after dark	18.900199999999998	18.8039	18.9965
8 h after dark	15.593	15.3633	15.8227
12 h after dark	12.80475	12.3887	13.2208