condition mean min max ZT0-3 2206.6000000000004 2206.6000000000004 2206.6000000000004 ZT4-7 1617.6 1617.6 1617.6 ZT8-11 1713.25 1713.25 1713.25 ZT12-15 1694.65 1694.65 1694.65 ZT16-19 2350.05 2350.05 2350.05 ZT20-23 2366.35 2366.35 2366.35