condition mean min max ZT0-3 4.12760819675 3.3529688305 4.902247563 ZT4-7 3.3369555815 2.804302987 3.869608176 ZT8-11 4.6536292545 4.4584078695 4.8488506395 ZT12-15 4.4492217965 4.2997816735 4.5986619195 ZT16-19 3.78009255575 3.609335821 3.9508492905 ZT20-23 5.6035032309999995 5.3674597045 5.8395467575