condition mean min max ZT0-3 6433.8 6433.8 6433.8 ZT4-7 5957.4 5957.4 5957.4 ZT8-11 6110.25 6110.25 6110.25 ZT12-15 7622.9 7622.9 7622.9 ZT16-19 8000.650000000001 8000.650000000001 8000.650000000001 ZT20-23 7248.25 7248.25 7248.25