condition mean min max ZT0-3 0.12670599375 0.103585995 0.1498259925 ZT4-7 0.365596396 0.1950463285 0.5361464635 ZT8-11 0.813057873 0.737144487 0.888971259 ZT12-15 2.21338208275 1.28473361 3.1420305555 ZT16-19 1.19559598825 1.1736785875 1.217513389 ZT20-23 2.0160485275 1.7205626765000002 2.3115343785