condition mean min max 0 h after light 0.0843475 0.0 0.168695 4 h after light 0.0 0.0 0.0 8 h after light 0.0833 0.0 0.1666 4 h after dark 0.1657115 0.165385 0.166038 8 h after dark 0.0836225 0.0 0.167245 12 h after dark 0.0822525 0.0 0.164505