condition mean min max 0 h after light 3.2327500000000002 2.61007 3.85543 4 h after light 3.391375 3.33926 3.44349 8 h after light 7.517445 7.47961 7.55528 4 h after dark 6.049135 5.83898 6.25929 8 h after dark 4.94317 4.58761 5.29873 12 h after dark 2.874215 2.72889 3.01954