condition mean min max ZT0-3 43.974149999999995 43.5863 44.361999999999995 ZT4-7 41.178349999999995 41.178349999999995 41.178349999999995 ZT8-11 46.648250000000004 46.648250000000004 46.648250000000004 ZT12-15 0 0 0 ZT16-19 51.953 51.953 51.953 ZT20-23 44.8167 44.8167 44.8167