condition mean min max ZT0-3 639.0465 447.039 804.654 ZT4-7 459.1315 459.1315 459.1315 ZT8-11 399.32399999999996 399.32399999999996 399.32399999999996 ZT12-15 569.81875 529.8534999999999 609.7840000000001 ZT16-19 640.7045 640.7045 640.7045 ZT20-23 812.6089999999999 812.6089999999999 812.6089999999999