condition mean min max ZT0-3 483.49042 483.49042 483.49042 ZT4-7 561.0072455 561.0072455 561.0072455 ZT8-11 665.3665555 665.3665555 665.3665555 ZT12-15 510.055973 510.055973 510.055973 ZT16-19 564.4322035 564.4322035 564.4322035 ZT20-23 497.40688550000004 497.40688550000004 497.40688550000004