condition mean min max ZT0-3 96.47515 96.47515 96.47515 ZT4-7 57.38255 57.38255 57.38255 ZT8-11 60.33005 60.33005 60.33005 ZT12-15 74.64875 74.64875 74.64875 ZT16-19 93.67304999999999 93.67304999999999 93.67304999999999 ZT20-23 86.66159999999999 86.66159999999999 86.66159999999999