condition mean min max 2 h after light 0.9932806666666667 0.977066 1.0178 6 h after light 1.006942 0.871196 1.11854 10 h after light 1.07656 1.02093 1.16077 2 h after dark 0.86867 0.779705 0.949964 6 h after dark 0.978517 0.857506 1.13285 10 h after dark 1.30897 1.10049 1.61985