condition mean min max ZT0-3 0.15544075 0.062065 0.2488165 ZT4-7 0.063325 0.063325 0.063325 ZT8-11 0.31276349999999997 0.31276349999999997 0.31276349999999997 ZT12-15 0 0 0 ZT16-19 0.3061545 0.3061545 0.3061545 ZT20-23 0.0 0.0 0.0