condition mean min max ZT0-3 0.29701806175 0.2652709345 0.32876518899999996 ZT4-7 1.0969210034999999 0.34448389300000004 1.849358114 ZT8-11 16.40231434325 11.8516767165 20.95295197 ZT12-15 24.01574413 23.414951965 24.616536295 ZT16-19 10.5995123365 10.5581631845 10.6408614885 ZT20-23 9.84524866425 9.64902573 10.0414715985