condition mean min max 0 h after light 0.0473548 0.0 0.0947096 4 h after light 0.0 0.0 0.0 8 h after light 0.0 0.0 0.0 4 h after dark 0.0933845 0.0 0.186769 8 h after dark 0.0 0.0 0.0 12 h after dark 0.0 0.0 0.0