condition	mean	min	max
4 h after light	18.01945	17.2581	18.7808
8 h after light	13.57095	13.5119	13.63
12 h after light	14.1408	12.0713	16.2103
4 h after dark	13.921366666666668	13.1742	14.8892
8 h after dark	17.820166666666665	16.421	18.7467
12 h after dark	17.7571	17.5596	18.0975