condition	mean	min	max
4 h after light	7.323625	6.27359	8.37366
8 h after light	14.0604	13.7297	14.3911
12 h after light	17.01605	15.2813	18.7508
4 h after dark	25.3051	22.9939	27.7916
8 h after dark	15.143366666666667	14.089	15.9985
12 h after dark	15.164466666666666	13.5797	18.2873