condition mean min max ZT0-3 319.45 319.45 319.45 ZT4-7 171.3 171.3 171.3 ZT8-11 241.7 241.7 241.7 ZT12-15 517.8499999999999 517.8499999999999 517.8499999999999 ZT16-19 392.25 392.25 392.25 ZT20-23 379.35 379.35 379.35