condition mean min max ZT0-3 2514.8999999999996 2514.8999999999996 2514.8999999999996 ZT4-7 2869.2 2869.2 2869.2 ZT8-11 2606.75 2606.75 2606.75 ZT12-15 2774.05 2774.05 2774.05 ZT16-19 2352.3500000000004 2352.3500000000004 2352.3500000000004 ZT20-23 2108.2 2108.2 2108.2