condition mean min max 4 h after light 3.8137566666666665 3.79431 3.8488900000000004 8 h after light 3.89916 3.8035 3.9719 12 h after light 3.8891099999999996 3.8353099999999998 3.94066 4 h after dark 3.8908733333333334 3.8092300000000003 3.95683 8 h after dark 3.82299 3.7595199999999998 3.89109 12 h after dark 3.7592833333333333 3.7347699999999997 3.80177