condition mean min max 0 h after light 0.0713235 0.0 0.142647 4 h after light 0.0 0.0 0.0 8 h after light 0.0 0.0 0.0 4 h after dark 0.0 0.0 0.0 8 h after dark 0.0 0.0 0.0 12 h after dark 0.069676 0.0 0.139352