condition mean min max ZT0-3 3.3695443965000003 1.44706496 5.292023833 ZT4-7 45.005484280000005 29.116184095 60.894784465 ZT8-11 138.29296506 122.39339952 154.1925306 ZT12-15 195.33969740000003 187.94165135000003 202.73774345 ZT16-19 141.065299625 122.0805393 160.05005995 ZT20-23 80.73688714 67.52661524999999 93.94715903