condition mean min max ZT0-3 1363.95 1363.95 1363.95 ZT4-7 1677.7 1677.7 1677.7 ZT8-11 1732.5 1732.5 1732.5 ZT12-15 1691.55 1691.55 1691.55 ZT16-19 1339.75 1339.75 1339.75 ZT20-23 1253.3000000000002 1253.3000000000002 1253.3000000000002