condition mean min max ZT0-3 5.724755 4.09063 7.358879999999999 ZT4-7 24.825 24.825 24.825 ZT8-11 26.13375 26.13375 26.13375 ZT12-15 0 0 0 ZT16-19 22.5623 22.5623 22.5623 ZT20-23 14.302700000000002 14.302700000000002 14.302700000000002