condition mean min max ZT0-3 6008.85 6008.85 6008.85 ZT4-7 7030.8 7030.8 7030.8 ZT8-11 7484.75 7484.75 7484.75 ZT12-15 7385.0 7385.0 7385.0 ZT16-19 7076.6 7076.6 7076.6 ZT20-23 6788.299999999999 6788.299999999999 6788.299999999999