condition	mean	min	max
4 h after light	11.92805	11.5119	12.3442
8 h after light	7.34117	7.00137	7.68097
12 h after light	13.93815	13.7821	14.0942
4 h after dark	18.79253333333333	18.2111	19.5088
8 h after dark	18.439433333333334	16.7935	20.3204
12 h after dark	14.878866666666667	14.1519	15.3905