condition mean min max ZT0-3 3687.6000000000004 3687.6000000000004 3687.6000000000004 ZT4-7 3957.6 3957.6 3957.6 ZT8-11 3464.5 3464.5 3464.5 ZT12-15 3429.25 3429.25 3429.25 ZT16-19 3845.65 3845.65 3845.65 ZT20-23 3709.8999999999996 3709.8999999999996 3709.8999999999996