condition mean min max ZT0-3 6653.9 6653.9 6653.9 ZT4-7 4699.9 4699.9 4699.9 ZT8-11 4267.9 4267.9 4267.9 ZT12-15 4037.6 4037.6 4037.6 ZT16-19 6716.599999999999 6716.599999999999 6716.599999999999 ZT20-23 6243.75 6243.75 6243.75