condition mean min max ZT0-3 0.34218922575 0.1386282385 0.5457502129999999 ZT4-7 0.3974818275 0.075984065 0.71897959 ZT8-11 0.92802945425 0.5868981495 1.269160759 ZT12-15 1.4309248172499998 0.5247855885 2.3370640459999996 ZT16-19 3.1446510525 2.4401668535 3.8491352515 ZT20-23 3.43638314225 3.1059642555 3.766802029