condition mean min max ZT0-3 1449.0 1449.0 1449.0 ZT4-7 1227.6 1227.6 1227.6 ZT8-11 1340.15 1340.15 1340.15 ZT12-15 1246.65 1246.65 1246.65 ZT16-19 1416.8 1416.8 1416.8 ZT20-23 1394.4 1394.4 1394.4