condition mean min max ZT0-3 42.852211277500004 35.311657885 50.39276467 ZT4-7 36.6250569875 31.954920970000003 41.295193005 ZT8-11 34.9874345125 32.184339800000004 37.790529225 ZT12-15 27.643624752500003 25.59611804 29.691131465 ZT16-19 28.52135226 25.52496329 31.51774123 ZT20-23 43.2801103275 38.651807590000004 47.908413065