condition mean min max ZT0-3 462.85 462.85 462.85 ZT4-7 203.0 203.0 203.0 ZT8-11 388.55 388.55 388.55 ZT12-15 404.75 404.75 404.75 ZT16-19 452.05 452.05 452.05 ZT20-23 361.6 361.6 361.6