condition mean min max ZT0-3 984.8525 984.8525 984.8525 ZT4-7 1054.6399999999999 1054.6399999999999 1054.6399999999999 ZT8-11 783.8019999999999 783.8019999999999 783.8019999999999 ZT12-15 586.1825 586.1825 586.1825 ZT16-19 594.4865 594.4865 594.4865 ZT20-23 896.3625 896.3625 896.3625