condition mean min max ZT0-3 3342.2 3342.2 3342.2 ZT4-7 2473.6 2473.6 2473.6 ZT8-11 2601.85 2601.85 2601.85 ZT12-15 3129.6000000000004 3129.6000000000004 3129.6000000000004 ZT16-19 3797.45 3797.45 3797.45 ZT20-23 3887.5499999999997 3887.5499999999997 3887.5499999999997