condition mean min max ZT0-3 10.622397500000002 10.292695 10.952100000000002 ZT4-7 9.806375 9.806375 9.806375 ZT8-11 10.102915 10.102915 10.102915 ZT12-15 0 0 0 ZT16-19 11.21 11.21 11.21 ZT20-23 11.2094 11.2094 11.2094