condition mean min max ZT0-3 51.4114 51.4114 51.4114 ZT4-7 85.31655 85.31655 85.31655 ZT8-11 105.0291 105.0291 105.0291 ZT12-15 94.76545 94.76545 94.76545 ZT16-19 59.10175 59.10175 59.10175 ZT20-23 54.9233 54.9233 54.9233