condition mean min max 3 h after light 0.0 0.0 0.0 6 h after light 0.153173 0.0 0.459519 9 h after light 0.25481233333333336 0.0 0.764437 12 h after light 0.0 0.0 0.0 3 h after dark 0.0 0.0 0.0 6 h after dark 0.0 0.0 0.0 9 h after dark 0.0 0.0 0.0 12 h after dark 0.0 0.0 0.0