condition mean min max 4 h after light 0.559565 0.491363 0.627767 8 h after light 0.7730085 0.671544 0.874473 12 h after light 0.7374195 0.721246 0.753593 4 h after dark 0.8622666666666666 0.560981 1.06374 8 h after dark 1.1562183333333333 0.922245 1.27402 12 h after dark 0.8618076666666666 0.756538 0.998663