condition mean min max ZT0-3 39.3219 39.3219 39.3219 ZT4-7 33.086749999999995 33.086749999999995 33.086749999999995 ZT8-11 49.8368 49.8368 49.8368 ZT12-15 50.67115 50.67115 50.67115 ZT16-19 70.1289 70.1289 70.1289 ZT20-23 44.8168 44.8168 44.8168