condition mean min max ZT0-3 4442.2 4442.2 4442.2 ZT4-7 3724.6 3724.6 3724.6 ZT8-11 5108.3 5108.3 5108.3 ZT12-15 8560.95 8560.95 8560.95 ZT16-19 9533.9 9533.9 9533.9 ZT20-23 6492.9 6492.9 6492.9