condition mean min max ZT0-3 98.466875 98.466875 98.466875 ZT4-7 118.242526 118.242526 118.242526 ZT8-11 126.51037050000001 126.51037050000001 126.51037050000001 ZT12-15 78.45713699999999 78.45713699999999 78.45713699999999 ZT16-19 43.2065505 43.2065505 43.2065505 ZT20-23 41.010521499999996 41.010521499999996 41.010521499999996