condition mean min max ZT0-3 554.4 554.4 554.4 ZT4-7 344.3 344.3 344.3 ZT8-11 329.8 329.8 329.8 ZT12-15 408.9 408.9 408.9 ZT16-19 667.25 667.25 667.25 ZT20-23 752.8499999999999 752.8499999999999 752.8499999999999