condition mean min max ZT0-3 238.05 238.05 238.05 ZT4-7 217.0 217.0 217.0 ZT8-11 220.45 220.45 220.45 ZT12-15 243.35 243.35 243.35 ZT16-19 293.1 293.1 293.1 ZT20-23 273.75 273.75 273.75