condition mean min max ZT0-3 3437.27804 3437.27804 3437.27804 ZT4-7 3771.9076905 3771.9076905 3771.9076905 ZT8-11 3746.204492 3746.204492 3746.204492 ZT12-15 3881.2736115 3881.2736115 3881.2736115 ZT16-19 3595.529266 3595.529266 3595.529266 ZT20-23 2741.121005 2741.121005 2741.121005