condition mean min max 4 h after light 7.178205 6.23475 8.12166 8 h after light 70.2986 70.2563 70.3409 12 h after light 120.207 102.135 138.279 4 h after dark 32.5974 31.8205 33.773 8 h after dark 20.776533333333333 17.7245 23.4439 12 h after dark 11.2678 10.6912 12.3601