condition mean min max ZT0-3 1.28251203375 1.170349361 1.3946747065 ZT4-7 1.2876947300000001 0.8164626134999999 1.7589268465 ZT8-11 3.39709261625 2.8887413575 3.905443875 ZT12-15 3.36025507125 3.1427370305 3.577773112 ZT16-19 2.362847061 2.2747963575 2.4508977644999996 ZT20-23 4.05241043525 3.5025911654999997 4.602229705