condition mean min max 2 h after light 0.0 0.0 0.0 6 h after light 0.0278325 0.0 0.166995 10 h after light 0.01420765 0.0 0.0852459 14 h after light 0.0 0.0 0.0 18 h after light 0.0 0.0 0.0 2 h after dark 0.0 0.0 0.0