condition mean min max ZT0-3 740.55 740.55 740.55 ZT4-7 525.4 525.4 525.4 ZT8-11 506.0 506.0 506.0 ZT12-15 461.7 461.7 461.7 ZT16-19 660.3 660.3 660.3 ZT20-23 708.0 708.0 708.0