condition mean min max ZT0-3 1485.3 1485.3 1485.3 ZT4-7 1335.4 1335.4 1335.4 ZT8-11 1317.75 1317.75 1317.75 ZT12-15 1301.0500000000002 1301.0500000000002 1301.0500000000002 ZT16-19 1389.45 1389.45 1389.45 ZT20-23 1528.0 1528.0 1528.0