condition mean min max ZT0-3 307.4 307.4 307.4 ZT4-7 467.0 467.0 467.0 ZT8-11 445.15 445.15 445.15 ZT12-15 360.54999999999995 360.54999999999995 360.54999999999995 ZT16-19 258.1 258.1 258.1 ZT20-23 238.3 238.3 238.3