condition mean min max ZT0-3 208.7 208.7 208.7 ZT4-7 481.2 481.2 481.2 ZT8-11 799.2 799.2 799.2 ZT12-15 946.8 946.8 946.8 ZT16-19 505.05 505.05 505.05 ZT20-23 335.54999999999995 335.54999999999995 335.54999999999995