condition mean min max ZT0-3 4.9397075 4.929995 4.94942 ZT4-7 4.168229999999999 4.168229999999999 4.168229999999999 ZT8-11 3.6413349999999998 3.6413349999999998 3.6413349999999998 ZT12-15 0 0 0 ZT16-19 4.929715 4.929715 4.929715 ZT20-23 6.9685299999999994 6.9685299999999994 6.9685299999999994