condition mean min max ZT0-3 4.2018375 3.793625 4.61005 ZT4-7 3.63736 3.63736 3.63736 ZT8-11 3.57584 3.57584 3.57584 ZT12-15 0 0 0 ZT16-19 5.529725 5.529725 5.529725 ZT20-23 4.6081199999999995 4.6081199999999995 4.6081199999999995