condition mean min max 2 h after light 0.0 0.0 0.0 6 h after light 0.0 0.0 0.0 10 h after light 0.034651 0.0 0.207906 14 h after light 0.0 0.0 0.0 18 h after light 0.0177365 0.0 0.106419 2 h after dark 0.020221666666666666 0.0 0.12133