condition mean min max ZT0-3 0.6232349315 0.454791844 0.791678019 ZT4-7 0.7103553574999999 0.6703180849999999 0.75039263 ZT8-11 0.7607476105000001 0.6300919700000001 0.8914032510000001 ZT12-15 0.8520953405 0.5677237390000001 1.136466942 ZT16-19 0.505767682 0.48397506649999994 0.5275602975 ZT20-23 0.5569543655 0.4349534235 0.6789553075