condition mean min max 0 h after light 0.8968985 0.83363 0.960167 4 h after light 0.706893 0.631115 0.782671 8 h after light 0.3872965 0.253317 0.521276 4 h after dark 0.660974 0.441809 0.880139 8 h after dark 0.538522 0.441301 0.635743 12 h after dark 1.108944 0.875458 1.34243