condition	mean	min	max
4 h after light	15.358531	15.009972	15.70709
8 h after light	17.955141	14.236243	21.674039
12 h after light	16.018991	15.889989	16.147993
4 h after dark	17.8582975	16.917478	18.799117
8 h after dark	17.779947999999997	16.147993	19.411903
12 h after dark	18.897961	18.897961	18.897961