condition mean min max ZT0-3 29.9253370575 20.50576169 39.344912425 ZT4-7 53.4775002 50.471717975000004 56.483282425 ZT8-11 53.7989936525 52.5127951 55.085192205 ZT12-15 93.031868645 78.52247058 107.54126671 ZT16-19 86.01907382249999 82.00479663 90.033351015 ZT20-23 63.7199196925 58.772660075000005 68.66717931