condition mean min max ZT0-3 0.7653595 0.7653595 0.7653595 ZT4-7 0.690596 0.690596 0.690596 ZT8-11 0.896013 0.896013 0.896013 ZT12-15 0.6891895 0.6891895 0.6891895 ZT16-19 0.6435075 0.6435075 0.6435075 ZT20-23 0.491033 0.491033 0.491033