condition mean min max ZT0-3 151.8 151.8 151.8 ZT4-7 298.4 298.4 298.4 ZT8-11 192.35 192.35 192.35 ZT12-15 117.69999999999999 117.69999999999999 117.69999999999999 ZT16-19 46.85 46.85 46.85 ZT20-23 34.85 34.85 34.85