condition mean min max ZT0-3 1614.9 1614.9 1614.9 ZT4-7 1609.9 1609.9 1609.9 ZT8-11 1374.2 1374.2 1374.2 ZT12-15 1394.4 1394.4 1394.4 ZT16-19 1619.75 1619.75 1619.75 ZT20-23 1902.1 1902.1 1902.1