condition mean min max ZT0-3 10.531270253999999 9.959976588 11.10256392 ZT4-7 10.4844103345 10.455583216333332 10.513237452666667 ZT8-11 10.6921834425 10.111835498 11.272531387 ZT12-15 11.212022881833335 10.81987996 11.604165803666668 ZT16-19 12.11157637 11.89423364 12.3289191 ZT20-23 11.0739954765 9.512692226333334 12.635298726666667