condition mean min max ZT0-3 10512.150000000001 10512.150000000001 10512.150000000001 ZT4-7 14698.6 14698.6 14698.6 ZT8-11 12833.1 12833.1 12833.1 ZT12-15 11684.85 11684.85 11684.85 ZT16-19 9147.65 9147.65 9147.65 ZT20-23 7866.650000000001 7866.650000000001 7866.650000000001