condition mean min max ZT0-3 3.22486570625 3.0114595110000004 3.4382719015 ZT4-7 0.2673037395 0.17969204600000002 0.354915433 ZT8-11 3.45734033775 2.4492296275 4.465451048 ZT12-15 127.89827889349999 61.230511686999996 194.5660461 ZT16-19 321.59662790000004 299.04986660000003 344.1433892 ZT20-23 400.16085255 394.35733200000004 405.9643731