condition mean min max 3 h after light 51.9582 48.1908 54.0085 6 h after light 47.3822 38.8155 54.2142 9 h after light 47.2389 45.5516 48.6649 12 h after light 41.2596 34.8209 45.9471 3 h after dark 55.623133333333335 53.8661 57.7969 6 h after dark 57.07593333333333 55.528 58.1351 9 h after dark 56.78856666666667 53.5426 59.3885 12 h after dark 69.44656666666667 65.1268 72.3775