condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.5269659215 0.2605569045 0.7933749385 ZT8-11 1.09291484325 0.8155603220000001 1.3702693645 ZT12-15 1.403554859 0.9540128485 1.8530968695 ZT16-19 2.64424308175 2.3270682595 2.961417904 ZT20-23 2.8213018240000003 2.791260707 2.8513429410000004