condition mean min max ZT0-3 55.1249833425 26.325451 83.924515685 ZT4-7 107.97431713249999 101.36882826499999 114.57980599999999 ZT8-11 65.3216317775 53.848994135 76.79426942 ZT12-15 41.985330465000004 39.06344801 44.907212920000006 ZT16-19 46.8456904775 43.97108851 49.720292445 ZT20-23 34.539648645 29.81298879 39.2663085