condition mean min max ZT0-3 2292.45 2292.45 2292.45 ZT4-7 1047.2 1047.2 1047.2 ZT8-11 1166.25 1166.25 1166.25 ZT12-15 1445.7 1445.7 1445.7 ZT16-19 1783.35 1783.35 1783.35 ZT20-23 2082.65 2082.65 2082.65