condition mean min max ZT0-3 787.6500000000001 787.6500000000001 787.6500000000001 ZT4-7 1299.4 1299.4 1299.4 ZT8-11 1416.15 1416.15 1416.15 ZT12-15 1346.4499999999998 1346.4499999999998 1346.4499999999998 ZT16-19 1002.05 1002.05 1002.05 ZT20-23 725.5 725.5 725.5