condition mean min max ZT0-3 148.6185 148.6185 148.6185 ZT4-7 202.275976 202.275976 202.275976 ZT8-11 326.702877 326.702877 326.702877 ZT12-15 454.88643950000005 454.88643950000005 454.88643950000005 ZT16-19 250.6280625 250.6280625 250.6280625 ZT20-23 298.3535805 298.3535805 298.3535805