condition mean min max ZT0-3 1383.5 1383.5 1383.5 ZT4-7 1529.4 1529.4 1529.4 ZT8-11 1557.9 1557.9 1557.9 ZT12-15 1521.6 1521.6 1521.6 ZT16-19 1562.15 1562.15 1562.15 ZT20-23 1379.25 1379.25 1379.25