condition mean min max 0 h after light 3.57871 3.49243 3.66499 4 h after light 2.957055 2.90841 3.0057 8 h after light 3.4938000000000002 3.18478 3.80282 4 h after dark 6.02731 5.17975 6.87487 8 h after dark 4.59393 3.81754 5.37032 12 h after dark 4.25093 3.05639 5.44547