condition mean min max 4 h after light 2.005665 1.85746 2.15387 8 h after light 1.876745 1.66264 2.09085 12 h after light 1.8103099999999999 1.77837 1.84225 4 h after dark 1.79231 1.69442 1.84428 8 h after dark 1.8918566666666665 1.64896 2.23385 12 h after dark 1.92065 1.74535 2.21084