condition mean min max 4 h after light 2.3283300000000002 2.18498 2.47168 8 h after light 1.921935 1.89332 1.95055 12 h after light 1.8639899999999998 1.41564 2.31234 4 h after dark 2.721505 2.60411 2.8389 8 h after dark 2.94874 2.66422 3.23326 12 h after dark 2.706545 2.42171 2.99138