condition mean min max ZT0-3 0.6610870710000001 0.0 1.3221741420000002 ZT4-7 15.30127760775 9.3272561255 21.27529909 ZT8-11 67.45500583 54.81613229 80.09387937 ZT12-15 103.4021994 91.67189181500001 115.13250698499999 ZT16-19 71.45049646500001 61.67766314000001 81.22332979000001 ZT20-23 46.3724201225 43.851987395 48.89285285