condition mean min max ZT0-3 4685.6 4685.6 4685.6 ZT4-7 2603.1 2603.1 2603.1 ZT8-11 2361.85 2361.85 2361.85 ZT12-15 1970.1499999999999 1970.1499999999999 1970.1499999999999 ZT16-19 2155.05 2155.05 2155.05 ZT20-23 3105.2000000000003 3105.2000000000003 3105.2000000000003