condition mean min max ZT0-3 2858.7 2858.7 2858.7 ZT4-7 2694.7 2694.7 2694.7 ZT8-11 2767.65 2767.65 2767.65 ZT12-15 2923.7 2923.7 2923.7 ZT16-19 2912.55 2912.55 2912.55 ZT20-23 3040.75 3040.75 3040.75