condition	mean	min	max
4 h after light	18.54515	18.251	18.8393
8 h after light	15.314149999999998	13.7831	16.8452
12 h after light	16.60985	14.8294	18.3903
4 h after dark	24.6386	21.2922	27.985
8 h after dark	15.837	15.8205	15.8535
12 h after dark	17.4339	16.6681	18.1997