condition mean min max 4 h after light 4.1191233333333335 2.23729 6.67833 8 h after light 3.3784266666666665 1.23409 5.11841 12 h after light 2.9527266666666665 1.56939 3.67879 4 h after dark 3.67868 2.51031 5.08902 8 h after dark 3.3101599999999998 1.88054 5.1339 12 h after dark 2.5888 2.28097 2.83617