condition mean min max ZT0-3 4082.9500000000003 4082.9500000000003 4082.9500000000003 ZT4-7 4487.2 4487.2 4487.2 ZT8-11 5653.35 5653.35 5653.35 ZT12-15 5450.0 5450.0 5450.0 ZT16-19 5212.0 5212.0 5212.0 ZT20-23 5058.45 5058.45 5058.45