condition mean min max 0 h after light 0.7360585 0.589477 0.88264 4 h after light 0.6491015 0.398858 0.899345 8 h after light 1.0746165 0.764083 1.38515 4 h after dark 1.33913 1.3003 1.37796 8 h after dark 0.982226 0.941732 1.02272 12 h after dark 0.548508 0.414398 0.682618