condition	mean	min	max
4 h after light	19.67935	18.2508	21.1079
8 h after light	23.063899999999997	22.6226	23.5052
12 h after light	19.927599999999998	18.9129	20.9423
4 h after dark	24.4333	23.0402	25.8264
8 h after dark	18.56605	17.8026	19.3295
12 h after dark	23.420949999999998	21.9731	24.8688