condition mean min max ZT0-3 20.1198222375 16.22551567 24.014128805 ZT4-7 24.444610777500003 23.870581055000002 25.0186405 ZT8-11 13.10225213825 11.54712302 14.657381256499999 ZT12-15 17.2499426025 13.095827985 21.40405722 ZT16-19 36.36862472 32.756651205 39.980598235 ZT20-23 45.4578847625 42.751039675 48.16472985