condition mean min max ZT0-3 572.05 572.05 572.05 ZT4-7 693.2 693.2 693.2 ZT8-11 727.2 727.2 727.2 ZT12-15 713.8 713.8 713.8 ZT16-19 653.5 653.5 653.5 ZT20-23 625.4 625.4 625.4