condition mean min max ZT0-3 318.1 318.1 318.1 ZT4-7 206.1 206.1 206.1 ZT8-11 258.7 258.7 258.7 ZT12-15 285.6 285.6 285.6 ZT16-19 352.5 352.5 352.5 ZT20-23 349.85 349.85 349.85