condition mean min max ZT0-3 511.971 511.971 511.971 ZT4-7 294.5335 294.5335 294.5335 ZT8-11 428.22249999999997 428.22249999999997 428.22249999999997 ZT12-15 564.8755 564.8755 564.8755 ZT16-19 689.84 689.84 689.84 ZT20-23 637.8779999999999 637.8779999999999 637.8779999999999