condition mean min max ZT0-3 0.5053398182500001 0.312930168 0.6977494685000001 ZT4-7 1.0571994352499998 0.7782265005 1.3361723699999999 ZT8-11 1.3071961920000001 1.066550823 1.547841561 ZT12-15 3.154613257 2.166467774 4.14275874 ZT16-19 2.6962498527500003 2.67561514 2.7168845655 ZT20-23 3.71828843675 3.0148589045 4.421717969