condition mean min max ZT0-3 65.6343 65.6343 65.6343 ZT4-7 53.4452 53.4452 53.4452 ZT8-11 27.082050000000002 27.082050000000002 27.082050000000002 ZT12-15 20.73075 20.73075 20.73075 ZT16-19 50.5124 50.5124 50.5124 ZT20-23 63.91825 63.91825 63.91825