condition mean min max ZT0-3 100.770524 100.770524 100.770524 ZT4-7 57.093886 57.093886 57.093886 ZT8-11 96.11454850000001 96.11454850000001 96.11454850000001 ZT12-15 114.44984250000002 114.44984250000002 114.44984250000002 ZT16-19 151.203489 151.203489 151.203489 ZT20-23 117.53334999999998 117.53334999999998 117.53334999999998