condition mean min max ZT0-3 410.05 410.05 410.05 ZT4-7 347.6 347.6 347.6 ZT8-11 327.85 327.85 327.85 ZT12-15 272.8 272.8 272.8 ZT16-19 336.9 336.9 336.9 ZT20-23 440.65 440.65 440.65