condition mean min max ZT0-3 94.35305 94.35305 94.35305 ZT4-7 63.67545 63.67545 63.67545 ZT8-11 38.7468 38.7468 38.7468 ZT12-15 55.396699999999996 55.396699999999996 55.396699999999996 ZT16-19 77.613 77.613 77.613 ZT20-23 107.188 107.188 107.188