condition mean min max 4 h after light 3.87702 3.79679 3.95725 8 h after light 3.19552 3.15839 3.23265 12 h after light 4.584295 4.24966 4.91893 4 h after dark 5.195209999999999 4.64848 5.74194 8 h after dark 5.292015 5.28272 5.30131 12 h after dark 5.420595 5.28715 5.55404