condition mean min max ZT0-3 5.59886 5.086565 6.111155 ZT4-7 15.793949999999999 15.793949999999999 15.793949999999999 ZT8-11 9.498429999999999 9.498429999999999 9.498429999999999 ZT12-15 0 0 0 ZT16-19 9.13045 9.13045 9.13045 ZT20-23 8.617360000000001 8.617360000000001 8.617360000000001