condition mean min max ZT0-3 10.58006 10.58006 10.58006 ZT4-7 12.998465 12.998465 12.998465 ZT8-11 12.90165 12.90165 12.90165 ZT12-15 12.008130000000001 12.008130000000001 12.008130000000001 ZT16-19 2.739595 2.739595 2.739595 ZT20-23 7.58384 7.58384 7.58384