condition mean min max ZT0-3 12.6715 11.08215 14.6267 ZT4-7 18.9608 18.9608 18.9608 ZT8-11 27.25215 27.25215 27.25215 ZT12-15 25.55685 22.893 28.2207 ZT16-19 25.13835 25.13835 25.13835 ZT20-23 17.24105 17.24105 17.24105