condition mean min max 4 h after light 0.0 0.0 0.0 8 h after light 0.03157155 0.0 0.0631431 12 h after light 0.0230216 0.0 0.0460432 4 h after dark 0.0 0.0 0.0 8 h after dark 0.0 0.0 0.0 12 h after dark 0.0 0.0 0.0