condition mean min max ZT0-3 1196.05 1196.05 1196.05 ZT4-7 1678.1 1678.1 1678.1 ZT8-11 1487.0 1487.0 1487.0 ZT12-15 1518.5500000000002 1518.5500000000002 1518.5500000000002 ZT16-19 1296.3 1296.3 1296.3 ZT20-23 1179.45 1179.45 1179.45