condition mean min max ZT0-3 534.55 534.55 534.55 ZT4-7 794.7 794.7 794.7 ZT8-11 963.5 963.5 963.5 ZT12-15 1042.05 1042.05 1042.05 ZT16-19 771.3499999999999 771.3499999999999 771.3499999999999 ZT20-23 583.25 583.25 583.25