condition mean min max ZT0-3 268.4 268.4 268.4 ZT4-7 273.3 273.3 273.3 ZT8-11 392.05 392.05 392.05 ZT12-15 393.3 393.3 393.3 ZT16-19 318.9 318.9 318.9 ZT20-23 289.85 289.85 289.85