condition mean min max ZT0-3 1178.25 1178.25 1178.25 ZT4-7 1132.5 1132.5 1132.5 ZT8-11 1114.05 1114.05 1114.05 ZT12-15 1504.45 1504.45 1504.45 ZT16-19 1762.75 1762.75 1762.75 ZT20-23 1377.4 1377.4 1377.4