condition mean min max ZT0-3 44.300000000000004 44.300000000000004 44.300000000000004 ZT4-7 21.2 21.2 21.2 ZT8-11 62.05 62.05 62.05 ZT12-15 11.8 11.8 11.8 ZT16-19 17.25 17.25 17.25 ZT20-23 59.85 59.85 59.85