condition mean min max 0 h after light 0.558898 0.466233 0.651563 4 h after light 0.047421 0.0 0.094842 8 h after light 0.0473751 0.0 0.0947502 4 h after dark 0.09159745 0.0914168 0.0917781 8 h after dark 0.0462226 0.0 0.0924452 12 h after dark 0.0929555 0.0 0.185911