condition mean min max 4 h after light 0.3233495 0.0 0.646699 8 h after light 0.0 0.0 0.0 12 h after light 0.0 0.0 0.0 4 h after dark 0.0 0.0 0.0 8 h after dark 0.47673666666666664 0.0 1.43021 12 h after dark 0.20712433333333333 0.0 0.621373