condition mean min max ZT0-3 64.7254 64.7254 64.7254 ZT4-7 70.3921 70.3921 70.3921 ZT8-11 58.93795 58.93795 58.93795 ZT12-15 50.1057 50.1057 50.1057 ZT16-19 55.51175 55.51175 55.51175 ZT20-23 57.14165 57.14165 57.14165