condition mean min max ZT0-3 1234.178024 1234.178024 1234.178024 ZT4-7 912.3559895000001 912.3559895000001 912.3559895000001 ZT8-11 1956.235874 1956.235874 1956.235874 ZT12-15 1456.6362075000002 1456.6362075000002 1456.6362075000002 ZT16-19 762.124004 762.124004 762.124004 ZT20-23 580.462826 580.462826 580.462826