condition mean min max 4 h after light 15.09 14.9327 15.2473 8 h after light 16.7009 15.9001 17.5017 12 h after light 20.332900000000002 19.968 20.6978 4 h after dark 25.718649999999997 24.3345 27.1028 8 h after dark 23.8099 23.4297 24.1901 12 h after dark 20.6705 19.6341 21.7069