condition mean min max 4 h after light 0.02287735 0.0 0.0457547 8 h after light 0.0185352 0.0 0.0370704 12 h after light 0.0 0.0 0.0 4 h after dark 0.0 0.0 0.0 8 h after dark 0.0 0.0 0.0 12 h after dark 0.01643755 0.0 0.0328751