condition mean min max ZT0-3 125.89525 100.8545 150.936 ZT4-7 511.398 511.398 511.398 ZT8-11 205.938 205.938 205.938 ZT12-15 0 0 0 ZT16-19 14.447804999999999 14.447804999999999 14.447804999999999 ZT20-23 38.7331 38.7331 38.7331