condition mean min max ZT0-3 7.28039 7.28039 7.28039 ZT4-7 16.383499999999998 16.383499999999998 16.383499999999998 ZT8-11 31.86875 31.86875 31.86875 ZT12-15 81.79615 81.79615 81.79615 ZT16-19 185.322 185.322 185.322 ZT20-23 28.319266666666667 28.319266666666667 28.319266666666667