condition mean min max ZT0-3 2633.95 2633.95 2633.95 ZT4-7 2253.5 2253.5 2253.5 ZT8-11 2711.85 2711.85 2711.85 ZT12-15 2516.1000000000004 2516.1000000000004 2516.1000000000004 ZT16-19 2464.25 2464.25 2464.25 ZT20-23 2694.6000000000004 2694.6000000000004 2694.6000000000004