condition mean min max ZT0-3 936.25 936.25 936.25 ZT4-7 939.2 939.2 939.2 ZT8-11 1032.85 1032.85 1032.85 ZT12-15 851.7 851.7 851.7 ZT16-19 841.4 841.4 841.4 ZT20-23 950.55 950.55 950.55