condition mean min max ZT0-3 210.75883083333332 196.33401536666668 225.1836463 ZT4-7 175.26312215 171.2986168 179.22762749999998 ZT8-11 171.84167904999998 170.1913581 173.492 ZT12-15 211.6886471166667 199.978833 223.39846123333334 ZT16-19 216.23774228333335 192.7455096 239.7299749666667 ZT20-23 165.98664424999998 154.8654836 177.1078049