condition mean min max ZT0-3 1.36026825 0.9707614999999999 1.749775 ZT4-7 1.950225 1.950225 1.950225 ZT8-11 4.2945 4.2945 4.2945 ZT12-15 0 0 0 ZT16-19 5.011635 5.011635 5.011635 ZT20-23 1.838305 1.838305 1.838305