condition mean min max ZT0-3 207.3225 207.3225 207.3225 ZT4-7 168.047 168.047 168.047 ZT8-11 148.478 148.478 148.478 ZT12-15 168.8665 168.8665 168.8665 ZT16-19 227.84699999999998 227.84699999999998 227.84699999999998 ZT20-23 218.003 218.003 218.003