condition mean min max ZT0-3 4.65749 4.65749 4.65749 ZT4-7 4.369485 4.369485 4.369485 ZT8-11 3.142215 3.142215 3.142215 ZT12-15 3.396845 3.396845 3.396845 ZT16-19 4.724215 4.724215 4.724215 ZT20-23 4.7504349999999995 4.7504349999999995 4.7504349999999995