condition mean min max 4 h after light 0.4889825 0.457151 0.520814 8 h after light 0.39052 0.324587 0.456453 12 h after light 0.6921035 0.631003 0.753204 4 h after dark 1.9299 1.68049 2.17931 8 h after dark 1.076075 1.06787 1.08428 12 h after dark 0.889721 0.786349 0.993093