condition mean min max ZT0-3 70.52516793 69.94292037 71.10741549 ZT4-7 105.70614386999999 75.270082755 136.14220498499998 ZT8-11 236.0540868 182.15953065 289.94864294999996 ZT12-15 164.5416714875 104.194451275 224.8888917 ZT16-19 62.071527114999995 50.029082790000004 74.11397143999999 ZT20-23 33.327590445 30.485014964999998 36.170165925