condition mean min max ZT0-3 80.001975 80.001975 80.001975 ZT4-7 87.209451 87.209451 87.209451 ZT8-11 114.5786215 114.5786215 114.5786215 ZT12-15 121.3463835 121.3463835 121.3463835 ZT16-19 155.870641 155.870641 155.870641 ZT20-23 112.69179499999998 112.69179499999998 112.69179499999998