condition mean min max ZT0-3 557.8 557.8 557.8 ZT4-7 526.6 526.6 526.6 ZT8-11 585.2 585.2 585.2 ZT12-15 683.7 683.7 683.7 ZT16-19 570.3 570.3 570.3 ZT20-23 670.1 670.1 670.1