condition mean min max 4 h after light 0.0 0.0 0.0 8 h after light 0.0 0.0 0.0 12 h after light 0.0 0.0 0.0 4 h after dark 0.02975115 0.0 0.0595023 8 h after dark 0.00745455 0.0 0.0149091 12 h after dark 0.0 0.0 0.0