condition mean min max ZT0-3 12.948599999999999 12.948599999999999 12.948599999999999 ZT4-7 10.57297 10.57297 10.57297 ZT8-11 14.847999999999999 14.847999999999999 14.847999999999999 ZT12-15 14.569500000000001 14.569500000000001 14.569500000000001 ZT16-19 14.951550000000001 14.951550000000001 14.951550000000001 ZT20-23 12.657499999999999 12.657499999999999 12.657499999999999