condition mean min max 4 h after light 0.0 0.0 0.0 8 h after light 0.0 0.0 0.0 12 h after light 0.02348945 0.0 0.0469789 4 h after dark 0.0 0.0 0.0 8 h after dark 0.020396 0.0 0.040792 12 h after dark 0.03411255 0.0 0.0682251