condition mean min max ZT0-3 25.699225000000002 25.55825 25.840200000000003 ZT4-7 17.5651 17.5651 17.5651 ZT8-11 9.36665 9.36665 9.36665 ZT12-15 0 0 0 ZT16-19 19.94235 19.94235 19.94235 ZT20-23 28.47225 28.47225 28.47225