condition mean min max ZT0-3 731.049 731.049 731.049 ZT4-7 531.193 531.193 531.193 ZT8-11 516.679 516.679 516.679 ZT12-15 532.7715000000001 532.7715000000001 532.7715000000001 ZT16-19 879.034 879.034 879.034 ZT20-23 863.3885 863.3885 863.3885