condition mean min max ZT0-3 80.845 80.845 80.845 ZT4-7 41.955112 41.955112 41.955112 ZT8-11 25.386255 25.386255 25.386255 ZT12-15 19.404472499999997 19.404472499999997 19.404472499999997 ZT16-19 29.070771 29.070771 29.070771 ZT20-23 38.408063 38.408063 38.408063