condition mean min max ZT0-3 0.10389093775 0.021462087 0.1863197885 ZT4-7 0.8071346177500001 0.400202551 1.2140666845 ZT8-11 2.67874125375 2.0731265295 3.284355978 ZT12-15 4.97104509975 3.7181239035 6.223966296 ZT16-19 3.17536712675 2.727193358 3.6235408954999997 ZT20-23 5.862313061750001 5.099430177 6.625195946500001