condition mean min max ZT0-3 39.2099 39.2099 39.2099 ZT4-7 35.910250000000005 35.910250000000005 35.910250000000005 ZT8-11 34.5055 34.5055 34.5055 ZT12-15 32.21695 32.21695 32.21695 ZT16-19 43.0602 43.0602 43.0602 ZT20-23 49.38243333333333 49.38243333333333 49.38243333333333