condition mean min max ZT0-3 3628.7200000000003 3628.7200000000003 3628.7200000000003 ZT4-7 3632.625 3632.625 3632.625 ZT8-11 4015.75 4015.75 4015.75 ZT12-15 4443.4 4443.4 4443.4 ZT16-19 3778.0 3778.0 3778.0 ZT20-23 3852.8050000000003 3852.8050000000003 3852.8050000000003