condition mean min max ZT0-3 65.815 65.815 65.815 ZT4-7 40.9406 40.9406 40.9406 ZT8-11 67.13794999999999 67.13794999999999 67.13794999999999 ZT12-15 71.30510000000001 71.30510000000001 71.30510000000001 ZT16-19 90.9988 90.9988 90.9988 ZT20-23 77.8055 77.8055 77.8055