condition mean min max ZT0-3 814.35 814.35 814.35 ZT4-7 776.4 776.4 776.4 ZT8-11 780.2 780.2 780.2 ZT12-15 889.05 889.05 889.05 ZT16-19 941.7 941.7 941.7 ZT20-23 1027.8 1027.8 1027.8