condition mean min max ZT0-3 217.05 217.05 217.05 ZT4-7 274.3 274.3 274.3 ZT8-11 252.2 252.2 252.2 ZT12-15 251.15 251.15 251.15 ZT16-19 256.1 256.1 256.1 ZT20-23 314.65 314.65 314.65