condition mean min max ZT0-3 259.7925 259.7925 259.7925 ZT4-7 252.445 252.445 252.445 ZT8-11 208.006 208.006 208.006 ZT12-15 210.75349999999997 210.75349999999997 210.75349999999997 ZT16-19 203.969 203.969 203.969 ZT20-23 229.426 229.426 229.426