condition mean min max ZT0-3 91.25 91.25 91.25 ZT4-7 109.7 109.7 109.7 ZT8-11 77.55000000000001 77.55000000000001 77.55000000000001 ZT12-15 62.2 62.2 62.2 ZT16-19 80.69999999999999 80.69999999999999 80.69999999999999 ZT20-23 117.0 117.0 117.0