condition mean min max ZT0-3 1201.0 1201.0 1201.0 ZT4-7 1087.2 1087.2 1087.2 ZT8-11 1273.9 1273.9 1273.9 ZT12-15 1447.5 1447.5 1447.5 ZT16-19 1724.4 1724.4 1724.4 ZT20-23 1880.5 1880.5 1880.5