condition mean min max ZT0-3 84.5 84.5 84.5 ZT4-7 50.2 50.2 50.2 ZT8-11 64.25 64.25 64.25 ZT12-15 100.94999999999999 100.94999999999999 100.94999999999999 ZT16-19 96.45 96.45 96.45 ZT20-23 80.44999999999999 80.44999999999999 80.44999999999999