condition mean min max ZT0-3 4.281252333333333 1.5101296666666666 7.052375 ZT4-7 2.34197 2.34197 2.34197 ZT8-11 13.24378 13.24378 13.24378 ZT12-15 129.12485625 101.3197125 156.93 ZT16-19 117.6524 75.9638 159.341 ZT20-23 0 0 0