condition	mean	min	max
4 h after light	12.991472000000002	11.912667	14.070277
8 h after light	15.768781	14.577886	16.959676
12 h after light	16.306245	14.577886	18.034604
4 h after dark	14.149364	12.521867	15.776861
8 h after dark	13.589559	12.601232	14.577886
12 h after dark	14.577886	14.577886	14.577886