condition mean min max ZT0-3 5339.15 5339.15 5339.15 ZT4-7 4155.8 4155.8 4155.8 ZT8-11 3961.75 3961.75 3961.75 ZT12-15 3953.95 3953.95 3953.95 ZT16-19 4777.7 4777.7 4777.7 ZT20-23 5528.5 5528.5 5528.5