condition mean min max 4 h after light 0.02962785 0.0 0.0592557 8 h after light 0.0248241 0.0 0.0496482 12 h after light 0.0 0.0 0.0 4 h after dark 0.0249287 0.0 0.0498574 8 h after dark 0.0126736 0.0 0.0253472 12 h after dark 0.0195233 0.0 0.0390466