condition mean min max ZT0-3 0.513807 0.39979600000000004 0.627818 ZT4-7 0.7942395 0.7942395 0.7942395 ZT8-11 0.5578259999999999 0.5578259999999999 0.5578259999999999 ZT12-15 0 0 0 ZT16-19 0.9436905 0.9436905 0.9436905 ZT20-23 1.4228649999999998 1.4228649999999998 1.4228649999999998