condition mean min max ZT0-3 2389.8 2389.8 2389.8 ZT4-7 1991.6 1991.6 1991.6 ZT8-11 1951.8000000000002 1951.8000000000002 1951.8000000000002 ZT12-15 1793.4 1793.4 1793.4 ZT16-19 2293.45 2293.45 2293.45 ZT20-23 2598.3 2598.3 2598.3