condition mean min max ZT0-3 286.15 286.15 286.15 ZT4-7 223.5 223.5 223.5 ZT8-11 264.8 264.8 264.8 ZT12-15 216.9 216.9 216.9 ZT16-19 332.0 332.0 332.0 ZT20-23 446.45 446.45 446.45