condition mean min max ZT0-3 1793.210545 1793.210545 1793.210545 ZT4-7 565.2173339999999 565.2173339999999 565.2173339999999 ZT8-11 177.2058505 177.2058505 177.2058505 ZT12-15 192.902197 192.902197 192.902197 ZT16-19 56.094559 56.094559 56.094559 ZT20-23 64.5491995 64.5491995 64.5491995